The Minor Planet Bulletin

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The Minor Planet Bulletin is the journal for almost all amateurs and even some professionals for publishing asteroid photometry results, including lightcurves, H-G parameters, color indexes, and shape/spin axis models. It is considered to be a refereed journal by the SAO/NASA ADS. All MPB papers are indexed in the ADS.

Print subscriptions are no longer available to individuals. Institutions (e.g., college libraries) can still obtain print copies via a special subscription. See details in MPB 37-4 or contact the editor, Richard Binzel.

Annual voluntary contributions of $5.00 or more in support of the publication are welcome.
Please send a check, drawn on a U.S. bank and payable in U.S. funds, to "Minor Planet Bulletin" and send it to:

Minor Planet Bulletin
c/o Melissa Hayes-Gehrke
UMD Astronomy Department
1113 PSC Bldg 415
College Park, MD 20742

Authors Guide and Word Templates   (v.2.9: updated 2019 November 14)
The ZIP file contains the Authors Guide PDF as well as a "starter" paper in Word 97 (DOT) and Word 2007+ (DOTX).
Please read this updated guide since there are a number of changes from previous guides.
  • The Pts column is no longer required and has been removed from the template for the standard table
    to allow more room for the other columns.
  • The phase column should have only two values: for the first and last date in the range.
    If the phase reaches an extrema between those dates, put an asterisk before the first value. For example,
  • Use semicolons to separate names in the references section. For example:
       Smith, J.J.; Jones, A.A. (2019).
    This also applies if using several references to the same author in the text. For example:
    "This asteroid was observed at three previous apparitions (Jones, 2015; 2017; 2018)..."

Cumulative Index to Volumes 1-45
Cumulative Asteroid Lightcurve Index (Volumes 1 through 50-1)

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Issues for the upcoming quarter-year are released on about the 21st of March, June, September, and December. Full issues and individual papers from vol 1 (1973) to present are available via links on this page.

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If the "Download PDF" link is visible and there is no PDF available, clicking the link will download an arbitrary page. We are working with ADS to make sure all papers are available and, if not, being able to diasable the link. The "Download Full Issue" link does retrieve the correct file.

Vol 1-7 run Jul-Jun. Vol 8-present run Jan-Dec. Only papers indexed in the ADS are included. Earlier volumes often contain more papers than listed here. It's recommended to download the full issue in vol 1-9.

Volume 50 (2023)

Volume 49 (2022)

Volume 48 (2021)

Volume 47 (2020)

Volume 46 (2019)

Volume 45 (2018)

Volume 44 (2017)

Volume 43 (2016)

Volume 42 (2015)

Volume 41 (2014)

Volume 40 (2013)

Volume 39 (2012)

Volume 38 (2011)

Volume 37 (2010)

Volume 36 (2009)

Volume 35 (2008)

Volume 34 (2007)

Volume 33 (2006)

Volume 32 (2005)

Volume 31 (2004)

Volume 30 (2003)

Volume 29 (2002)

Volume 28 (2001)

Volume 27 (2000)

Volume 26 (1999)

Volume 25 (1998)

Volume 24 (1997)

Volume 23 (1996)

Volume 22 (1995)

Volume 21 (1994)

Volume 20 (1993)

Volume 19 (1992)

Volume 18 (1991)

Volume 17 (1990)

Volume 16 (1989)

Volume 15 (1988)

Volume 14 (1987)

Volume 13 (1986)

Volume 12 (1985)

Volume 11 (1984)

Volume 10 (1983)

Volume 9 (1982)

Volume 8 (1981)

Volume 7 (1980)

Volumes 6-7 (1979)

Volumes 5-6 (1978)

Volumes 4-5 (1977)

Volumes 3-4 (1976)

Volumes 2-3 (1975)

Volumes 1-2 (1974)

Volume 1 (1973)

Issue 50-1 (2023 Jan-Mar)
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Editorial: The Minor Planet Bulletin at 50
Pages 1-2
Binzel, Richard P.

With this issue, the Minor Planet Bulletin and the Minor Planets Section of the Association of Lunar and Planetary Observers commemorate their 50th year. (Official founding was in mid-1973.) At this milestone for our field, we are extremely fortunate to receive a continuing retrospective from the Founder, Professor Richard G. Hodgson. Commensurate with this milestone, Professor Frederick Pilcher, Minor Planets Section Coordinator since 1982 (formerly titled as "Recorder") shares in this issue his recollections "A Lifetime with the Asteroids." Professor Pilcher's essay is a treasure trove of thoughts that are most gratefully received.

The Early Years of the Minor Planet Bulletin
Pages 1-2
Hodgson, Richard G.

The founding of the Minor Planets Section and The Minor Planet Bulletin are recollected, including their earliest sense of purpose and aspirations.

A Lifetime with Asteroids
Pages 2-5
Pilcher, Frederic

Asteroids have been a part of my life for seven decades, moving forward from being an aspiring amateur astronomer, to observatory builder, to methodical observer, and dedicated collaborator seeking to advance lightcurve studies. I have been part of the Minor Planets Section for all of its 50 years, with the honor to serve as Coordinator (originally titled "Recorder") for the past 40 years, and continuing.

Lightcurve Of Koronis Family Member (993) Moultona
Pages 6
Crowley, Eva Mae; Wilkin, Francis P.

Using three telescopes, a lightcurve was made for the asteroid (993) Moultona. There is no previously published lightcurve for this Koronis Family member. Based upon our lightcurve, the period is 5.2702 0.0004 h, with amplitude 0.80 0.06 mag.

Lightcurve For Koronis Family Member (1389) Onnie
Pages 7-8
Wilkin, Francis P; MacDonald, Finlay; Slivan, Stephen M.

We have used east and west stationary point observations of (1389) Onnie to determine a definitive period of 23.044+/-0.001 h.

Synodic And Sidereal Rotation Periods Of Koronis Family Member (1389) Onnie
Pages 8-10
Slivan, Stephen M.; Colclasure, Abigail M.; Larsen, Skylar S.; McLellan-Cassivi, Claire J.; Neto, Orisvaldo S.; Noto, Maurielle I.; Redden, Maya S.; Wilkin, Francis P.

Lightcurve observations of (1389) Onnie during its 2022 apparition yield a secure determination of its synodic rotation period 23.038 ± 0.005 h, and an unambiguous count of sidereal rotations back to 2017 constrains the sidereal rotation period.

Lightcurve Analysis of Asteroid 2685 Masursky
Pages 11
Hayes-Gehrke, Melissa.; Khan, Raiden; Liao, Shijia; Siegel, Tucker; Vincent, Jorin; DeBoy, Stephen; Guenterberg, Evan; Hamilton, Drew; Hopkins, Brain; Katz, Ilan; Sargent, Robert; Storey, Cameron; Zhang. Gary; Brincat, Stephen M.; Mifsud, Martin

Photometric observations of the main-belt asteroid 2685 Masursky were conducted to determine the asteroid's synodic rotation period. Three telescopes based in Malta and Australia were used. The authors found a synodic rotation period of P = 59.531 ± 0.052 h with an amplitude of A = 1.26 mag.

Lightcurve, Rotation Period and Spin-shape Model for 2764 Moeller
Pages 12-14
Fauerbach, Michael; Benishek, Vladimir; Warner, Brian D.

We present a new lightcurve measurement and a shape and spin axis model for main-belt asteroid 2764 Moeller. The model was achieved with the lightcurve inversion process, using combined dense photometric data acquired from two apparitions, between 2018 and 2022 and sparse data from Catalina Sky Survey (693, 703, G97) and Asteroid Terrestrial-impact Last Alert System (ATLAS, T05-T08). Analysis of the resulting data found a sidereal period P = 5.953424 ± 0.000001 h and two mirrored pole solutions at (l = 310°, b = 41°) and (l = 133°, b = 39°) with an uncertainty of ± 20 degrees.

Lightcurve Analysis and Rotation Period for Asteroid 5147 Maruyama
Pages 15
Hayes-Gehrke, Melissa; Arcilesi, Caleb; Batres,Jacqueline; Byrne, William; Devan, Joshua; Eichenwald, Victor; Goodwin, Natalie; Huang, Brian; Joshi, Sidharsh; Karafotias, Charles; Maxwell, Nicole; Pereyra, Nathan; Brincat, Stephen M.; Galdies, Charles

Photometric lightcurve analysis was applied to asteroid 5147 Maruyama based on observations taken in 2022 April. Observations were made from Australia and Malta to determine the rotation period of 5147 Maruyama. We used MPO Canopus to analyze the lightcurve of our asteroid in order to determine its rotation period to be P = 50.9 ± 0.1 h.

Rotation Period Determination for (7335) 1989 JA
Pages 16-17
Archer, John; Billiani, Mario; Bradley, John K.; Breeze-Lamb, Phil; Camilleri, Michael; Davy, Martin; Deitz, John; Donnelly, Stephen; Fairfax, Mark; Fukui, Keiichi; Gamurot, Ryan; Goto, Tateki; Guillet, Bruno; Kardel, Scott; Knight, Rachel; Langvad, William Hedegaard; Loose, Margaret A.; Meneghelli, Nicola; Mitchell, Mike; Nikiforov, Pavel; Parker, Bruce; Pickering, John W.; Primm, Michael; Randolph, Justus; Ribas, Felipe Braga; Richardot, Fabien; Rivett, Darren A.; Shimizu, Masao; Simard, Georges; Smallen, Martin; Teng, Ethan; van Dam, Marcos A.; Verveen, Aad; Widi, Joe

We present the results of an observational study of the near-Earth asteroid (7335) 1989 JA conducted during its May 2022 close approach. Using data collected from participating Unistellar citizen astronomers, we report a best-fitting synodic rotation period of 2.592 ± 0.006 hours with a corresponding amplitude of 0.09 ± 0.01 magnitudes for (7335) 1989 JA.

Rotation Period Determination for Asteroid 12919 Tomjohnson
Pages 17-18
Marchini, Alessandro; Papini, Riccardo

Photometric observations of the main-belt asteroid 12919 Tomjohnson were conducted in order to determine its synodic rotation period. We found P = 8.147 ± 0.001 h, A = 0.51 ± 0.03 mag.

Photometry of NEA (285263) 1998 QE2 During Its 2013 Close Approach
Pages 19-20
Christou, Apostolos; Gazeas, Kosmas

We present a new rotational lightcurve and period/amplitude determination for NEA (285263) 1998 QE2 from photometric data obtained during four consecutive nights in June 2013, when the asteroid was between 0.04 and 0.05 au from Earth. The results are: P = 4.7589 ± 0.0119 h and A = 0.21 ± 0.03.

Near-Earth Asteroid Lightcurve Analysis At The Center For Solar System Studies: 2022 June-October
Pages 21-25
Warner, Brian D.; Stephens, Robert D.

CCD photometric observations of six near-Earth asteroids (NEA) were made at the Center for Solar System Studies from 2022 June to October. (54789) 2002 MZ7 appears to be in non-principal axis rotation ("tumbling"), which was reliably established by Pravec et al. (2005). Our analysis found an additional, unexpected short period, low amplitude lightcurve. 398188 Agni also appears to be tumbling. It was not possible to establish the true periods of rotation and precession for either asteroid.

Lightcurve Analysis for Eight Near-Earth Asteroids
Pages 26-33
Birtwhistle, Peter

Lightcurves and amplitudes for eight near-Earth asteroids observed from Great Shefford Observatory during close approaches between 2022 July and September are reported. All are superfast rotators, with periods < 12 minutes and three are identified as tumblers, i.e., showing non-principal axis rotation.

Lightcurve Analysis Of Hilda Asteroids At The Center For Solar System Studies: 2022 July-October
Pages 33-36
Warner, Brian D.; Stephens, Robert D.

CCD photometric observations of eight Hilda asteroids were made at the Center for Solar System Studies between 2022 July and October.

On Confirmed and Suspected Binary Asteroids Observed at the Center for Solar System Studies: 2022 June to August
Pages 37-39
Warner, Brian D.; Stephens, Robert D.

Analysis of CCD photometric observations obtained in 2022 June to August of the inner main-belt asteroid 3533 Toyota and near-Earth asteroid (85804) 1998 WQ5 at the Center for Solar System Studies indicate that both asteroids are likely binary. For 3533, we found P1 = 2.9809 h and PORB = 16.070 h but, for the latter, solutions of 12.098 h and 24.2176 h cannot be formally excluded. (85804) 1998 WQ5 has P1 = 2.6761 h and PORB = 46.13 h. The estimated diameter ratio of the two bodies is >0.33.

Rotational Period And Lightcurve Determination Of Two Asteroids
Pages 40-41
Arminski, Andrzej

Photometric observations were conducted of two main-belt steroids. The results of lightcurve analysis gave sidereal rotation periods and amplitudes shown in the table below.

Lightcurve Analysis of Three Asteroids
Pages 41-42
Chelius, Thomas

Photometric observations were made of three main-belt asteroids in 2021 March at the Las Campanas Remote Observatory. The rotational period and amplitude of each asteroid were determined.

Photometric Observations and Rotation Periods of Asteroids 175 Andromache, 6569 Ondaatje, and 2006 NL. Rotation Period Revision of Asteroid (7335) 1989 JA
Pages 43-47
Schmalz, Sergei; Schmalz, Anastasia; Voropaev, Viktor; Novichonok, Artyom; Ivanov, Alexandr; Ivanov, Viktor; Ivanova, Natalia; Barkov, Anatoliy; Lysenko, Vadim; Yakovenko, Nikolay; Gorbunov, Nikita; Kurbatov, German; Shchukin, Pavel; Graziani, di Roberto, Riccardo

Photometric observations of asteroids 175 Andromache, 6569 Ondaatje, and 2006 NL were conducted in order to determine their synodic rotation period, the absolute brightness with its amplitude and estimate their diameter. For 175 Andromache we found P = 8.324 ± 0.004 h, H = 8.51 ± 0.05 mag, A = 0.40 ± 0.05 mag, D = 105.290 ± 1.170 km (for albedo a = 0.0631) and D = 86.265 ± 1.253 km (for albedo a = 0.094). For 6569 Ondaatje we found P = 5.954 ± 0.002 h, H = 16.44 ± 0.05 mag, A = 0.99 ± 0.05 mag, D = 1.770 ± 0.020 km (for albedo a = 0.15) and D = 1.533 ± 0.021 km (for albedo a = 0.20). For 2006 NL we found P = 6.503 ± 0.003 h, H = 19.65 ± 0.05 mag, A = 1.12 ± 0.05 mag, D = 0.404 ± 0.004 km (for albedo a = 0.15) and D = 0.350 ± 0.005 km (for albedo a = 0.20). We also revised our previously reported synodic rotation period of asteroid (7335) 1989 JA and determined it to be P = 2.588 ± 0.001 h.

Collaborative Asteroid Photometry from UAI: 2022 July-September
Pages 47-50
Franco, Lorenzo; Iozzi, Marco; Scarfi, Giulio; Mortari, Fabio; Gabellini, Davide; Ruocco, Nello; Fini, Paolo; Betti, Guido; Marchini, Alessandro; Aceti, Pietro; Banfi, Massimo; Baj, Giorgio; Bacci, Paolo; Maestripieri, Martina; Bachini, Mauro; Succi, Giacomo; Coffano, Alessandro; Marinello, Wladimiro; Galli, Gianni; Montigiani, Nico; Mannucci, Massimiliano

Photometric observations of six asteroids were made in order to acquire lightcurves for shape/spin axis modeling. The synodic period and lightcurve amplitude were found for 78 Diana, 198 Ampella, 895 Helio, 1060 Magnolia, 1543 Bourgeois, 1806 Derice. We also found color indices for 78 Diana, 198 Ampella, 895 Helio, 1060 Magnolia and H-G parameters for 198 Ampella.

Asteroid Photometry and Lightcurve
Pages 51-53
Colazo, Milagros; Scotta, Damián; Melia, Raúl; Ciancia, Giuseppe; Fornari, César; Morales, Mario; Monteleone, Bruno; Wilberger, Aldo; Santos, Francisco; García, Alberto; Suárez, Néstor; Bellocchio, Ezequiel; Chapman, Andrés; Nolte, Ricardo; Martini, Matías; Mottino, Aldo; Colazo, Carlos

Synodic rotation periods and amplitudes are reported for: 786 Bredichina, 795 Fini, 892 Seeligeria, 1343 Nicole, 2717 Tellervo, 3224 Irkutsk.

Synodic Period Determination of Seven Main-belt Asteroids from Maltese Observatories
Pages 54-57
Brincat, Stephen M.; Galdies, Charles; Mifsud, Martin; Grech, Winston

Photometric observations of seven asteroids were acquired from four Maltese observatories in order to derive or update published synodic periods and lightcurve amplitudes of the asteroids: 1461 Jean-Jacques, 2030 Belyaev, 2149 Schwambraniya, 3114 Ercilla, (7357) 1995 UJ7, 12919 Tomjohnson, and (20895) 2000 WU106.

Main-belt Asteroids Observed from CS3: 2022 July-September
Pages 58-61
Stephens, Robert D.; Coley, Daniel R.; Mathis, Thomas M.; Warner, Brian D.

CCD photometric observations of seven main-belt asteroids were obtained at the Center for Solar System Studies (CS3) from 2022 July-September. Two revised periods from observations obtained in 2003 and 2018 are also reported. 4429 Chinmoy appears to be in non-principal axis rotation ("tumbling"). Our analysis found an additional, unexpected short period, low amplitude lightcurve. (101465) 1998 WL12 also appears to be tumbling. It was not possible to establish the true periods of rotation and precession for either asteroid.

Photometry of 10 Asteroids at Sopot Astronomical Observatory: 2022 May - October
Pages 62-64
Benishek, Vladimir

Lightcurves and synodic rotation periods established for 10 asteroids using photometric observations carried out at Sopot Astronomical Observatory in the time span 2022 May - October are presented in this paper.

Lightcurves of Nineteen Asteroids
Pages 65-73
Dose, Eric V.

We present lightcurves, synodic rotation periods, and G slope value (H-G) estimates for nineteen asteroids.

Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS): Paper 5
Pages 74-101
Skiff, Brian A.; McLelland, Kyle P.; Sanborn, Jason, J.; Koehn, Bruce W.

New photometry and lightcurves are shown for 107 asteroids observed mainly between 2009 and 2012 using four telescopes at Lowell Observatory. The data have not been previously published in detail. This completes work on the NEAPS program.

Lightcurve Analysis for Three Main-belt Asteroids
Pages 101-102
Casalnuovo, Giovanni Battista

Photometric observations of three main-belt asteroids 4494 Marimo, 5516 Jawilliamson, and (57754) 2001 VW12, were made at the Filzi School Observatory (School in country Laives - Italy) MPC Station D12.

Minor Planets at Unusually Favorable Elongations in 2023
Pages 103-105
Pilcher, Frederick

A list is presented of minor planets which are much brighter than usual at their 2023 apparitions.

Asteroid-Deepsky Appulses in 2023
Pages 106
Warner, Brian D.

he following list is a very small subset of the results of a search for asteroid-deepsky appulses for 2023, presenting only the highlights for the year based on close approaches of brighter asteroids to brighter DSOs.

Lightcurve Photometry Opportunities: 2023 January-March
Pages 107-111
Warner, Brian D.; Harris, Alan W.; Durech, Josef; Benner, Lance A.M.

We present lists of asteroid photometry opportunities for objects reaching a favorable apparition and have no or poorly-defined lightcurve parameters. Additional data on these objects will help with shape and spin axis modeling using lightcurve inversion. We have changed the presentation of the “Radar-Optical Opportunities” section to include a list of potential radar targets as well as some that are in critical need of astrometric data and, if found, might also be targets for radar. These can have ephemeris errors on the order of tens to thousands of arcseconds and, despite the current surveys, have not been observed for several years. This makes them a double challenge: first to be found and, second, to determine astrometric positions and photometric properties.

In This Issue
Pages 108
Warner, Brian D.

This list gives those asteroids in this issue for which physical observations (excluding astrometric only) were made. This includes lightcurves, color index, and H-G determinations, etc. In some cases, no specific results are reported due to a lack of or poor quality data. The page number is for the first page of the paper mentioning the asteroid. EP is the "go to page" value in the electronic version.

copyright©2017-2022 Brian D. Warner. Funding to support this web site was provided by NASA grant NSSC 80NSSC18K0851 prior to 2021 April.