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 46-2)

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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 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)

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Volumes 6-7 (1979)

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Volume 1 (1973)

Issue 49-3 (2022 Jul-Sep)
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Lightcurve Photometry of Asteroid 1637 Swings
Pages 159-160
Sani, Idris Abubakar; Offor, Peter; Njoku-Achu, Nnaemeka; Nowinski, Matthew C.; Ofodum, Chukwujekwu; Okere, Bonaventure

Lightcurve photometry of the main-belt asteroid 1637 Swings yielded an estimated period of 10.226 ± 0.009 h and an amplitude of 0.25 ± 0.0075 mag.

1903 Adzhimushkaj: An Extremely Slow Rotator
Pages 160-191
Polakis, Tom

Photometric reductions from the first week of observations of 1903 Adzhimushkaj revealed that it would have a long period. Completing observations for one full rotation required a 75-night interval from November 2021 through February 2022. The phased lightcurve shows a period of 1793.8 ± 3.6 h. Recent analysis of survey images by other authors indicates that these "superslow" rotation rates are not uncommon.

The Rotation Period Of 128 Nemesis Is Re-Examined
Pages 162-163
Pilcher, Frederick

A synthesis of all published rotation periods of 128 Nemesis shows that the period is ambiguous and may be either 38.91 hours or 77.81 hours. The author explains why he prefers the 38.91-hour period.

748 Simeisa – An Asteroid With An Earth-Commensurate Rotation Period Is Solved
Pages 164-165
Pilcher, Frederick; Franco, Lorenzo; Marchini, Alessandro; Papini, Riccardo

A global collaboration of observers from Australia, Europe, and North America finds for 748 Simeisa a synodic rotation period 11.905 ± 0.001 h, amplitude 0.28 ± 0.02 magnitudes, V-R = 0.45 magnitudes, in the V band H = 9.224 ± 0.050, G = 0.316 ± 0.087.

Rotational Period Determination of 2282 Andres Bello
Pages 166
Smith, Jack

The asteroid 2282 Andrés Bello was observed over the course of one night using the PIRATE telescope at Teide Observatory, Las Palmas. The rotation period and lightcurve amplitude observed were P = 3.394 h and A = 0.64 mag. These values are consistent with those previously reported by D. Klinglesmith et al. (2016). The diameter and mass of 2282 Andrés Bello are found to be 7.1 km and 6×10^14 kg.

Rotation Period Determination for (9659) 1996 EJ
Pages 167-168
Marchini, Alessandro; Papini, Riccardo; Salvaggio, Fabio

Photometric observations of the main-belt asteroid (9659) 1996 EJ were conducted in order to determine its synodic rotation period. We found P = 6.527 ± 0.001 h, A = 0.09 ± 0.03 mag.

Lightcurve Analysis for Nine Near-Earth Asteroids
Pages 169-175
Birtwhistle, Peter

Lightcurves and amplitudes for nine small near-Earth asteroids observed from Great Shefford Observatory during close approaches between January and March 2022 are reported. Seven are superfast rotators with periods < 8 minutes and include two tumblers. Another shows indications of tumbling with likely periods > 1 h and one shows no discernable rotation.

Near-Earth Asteroid Lightcurve Analysis At The Center For Solar System Studies: 2022 February-March
Pages 176-179
Warner, Brian D.; Stephens, Robert D.

Lightcurves of six near-Earth asteroids (NEAs) obtained at the Center for Solar System Studies (CS3) in 2022 February and March were analyzed for rotation period, peak-to-peak amplitude, and signs of satellites or tumbling. There are good indications that (138971) is in a low-level tumbling state.

Lightcurves for Fifteen Minor Planets
Pages 179-187
Polakis, Tom

Photometric measurements were made for 15 main-belt asteroids, based on CCD observations made from 2022 January through 2022 March. Phased lightcurves were created for 14 asteroids, while one did not yield a period solution. All the data have been submitted to the ALCDEF database.

Lightcurves and Rotation Periods of 49 Pales, 424 Gratia, 705 Erminia, 736 Harvard, 1261 Legia, 1541 Estonia, and 6371 Heinlein
Pages 185-188
Pilcher, Frederick

Synodic rotation periods and amplitudes are found for 49 Pales, 20.702 ± 0.001 hours, 0.18 ± 0.01 magnitudes with 4 unequal maxima and minima per cycle; 424 Gratia, 20.063 ± 0.002 hours with one asymmetric maximum and minimum per cycle, 0.15 ± 0.01 magnitudes; 705 Erminia, 53.68 ± 0.01 hours, 0.09 ± 0.01 magnitudes with an irregular monomodal lightcurve; 736 Harvard, 6.742 ± 0.001 hours, 0.09 ± 0.01 magnitudes; 1261 Legia, 25.71 ± 0.01 hours, 0.12 ± 0.01 magnitudes; 1541 Estonia, 12.890 ± 0.001 hours, 0.16 ± 0.01 magnitudes; 6371 Heinlein, 4.962 ± 0.003 hours, 0.55 ± 0.05 magnitudes. For 49 Pales V-R = 0.36, H=7.69 in the V band, G=0.10.

Asteroid Photometry And Lightcurve Results For Seven Asteroids
Pages 189-192
Colazo, Milagros; Monteleone, Bruno; Santos, Francisco; Morales, Mario; García, Alberto; Suárez, Néstor; Altuna, Leopoldo; Caballero, Macarena; Romero, Fabricio; Speranza, Tiago; Bellocchio, Ezequiel; Santucho, Marcos; Fornari, César; Melia, Raúl; Stechina, Ariel; Scotta, Damián; Arias, Nicolás; Chapman, Andrés; Ciancia, Giuseppe; Wilberger, Aldo; Anzola, Marcos; Mottino, Aldo; Colazo, Carlos

Synodic rotation periods and lightcurve amplitudes are reported for: 308 Polyxo, 488 Kreusa, 494 Virtus, 570 Kythera, 702 Alauda, 877 Walkure, and 995 Sternberga.

Rotation Period Determination For Asteroids (19469) 1998 HV45 And (51442) 2001 FZ25
Pages 192-193
Ergashev, K. E.; Burkhonov, O. A. ; Ehgamberdiev, Sh. A.; Abduraimov, S. M.

We present the results of observations of the main-belt asteroids (19469) 1998 HV 45 and (51442) 2001 FZ25. Observations were carried out in 2020 September at the Maidanak Astronomical Observatory. We found a synodic period for (19469) 1998 HV 45 of P = 7.035 ± 0.002 h and for (51442) 2001 FZ25 we found P = 4.334 ± 0.001 h.

Asteroid Photometry from the Preston Gott Observatory
Pages 194-195
Clark, Maurice

Asteroid period and amplitude results for six objects are reported for data obtained at the Preston Gott Observatory during June 2021.

Nine Main Belt Asteroids, One Near Earth, and Two Potentially Hazardous Asteroid Lightcurves
Pages 196-199
Fornas, Gonzalo; Fornas, Alvaro; Mas, Vicente

We report on the photometric analysis result of nine main-belt (MBA), one near-Earth (NEA), and two Potentially Hazardous (PHA) asteroids by the Asociación Valenciana de Astronomía (AVA). The work was done from the Astronomical Center Alto Turia (CAAT; MPC J57), located in Aras de los Olmos, Valencia, and operated by members of AVA ( This database shows graphic results of the data, mainly lightcurves, with the plot phased to a given period.

Collaborative Asteroid Photometry from UAI: 2022 January-March
Pages 200-204
Franco, Lorenzo; Marchini, Alessandro; Papini, Riccardo; Iozzi, Marco; Scarfi, Giulio; Mortari, Fabio; Gabellini, Davide; Bacci, Paolo; Maestripieri, Martina; Baj, Giorgio; Galli, Gianni; Coffano, Alessandro; Marinello, Wladimiro; Pizzetti, Giampaolo; Aceti, Pietro; Banfi, Massimo; Tinelli, Luciano; Montigiani, Nico; Mannucci, Massimiliano; Noschese, Alfonso; Mollica, Maurizio; Guido, Ernesto; Ruocco, Nello; Bachini, Mauro; Succi, Giacomo

Photometric observations of eleven asteroids were made to acquire lightcurves for shape/spin axis modeling. The synodic period and lightcurve amplitude were found for 49 Pales, 142 Polana, 206 Hersilia, 737 Arequipa, 1071 Brita, 1120 Cannonia, 1166 Sakuntala, 1736 Floirac, 3103 Eger, 4528 Berg and (7482) 1994 PC1. We also found color indices for 49 Pales, 142 Polana, 206 Hersilia, 1071 Brita, 1120 Cannonia, 3103 Eger and 4528 Berg; along with H-G parameters for 49 Pales, 1071 Brita, and 4528 Berg.

Lightcurves of Eight Asteroids
Pages 218-222
Dose, Eric V.

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

Main-belt Asteroids Observed from CS3: 2022 January-March
Pages 205-218
Stephens, Robert D.; Warner, Brian D.

CCD photometric observations of 21 main-belt asteroids were obtained at the Center for Solar System Studies (CS3) from 2022 January-March.

On Confirmed and Suspected Binary Asteroids Observed at The Center for Solar System Studies: 2022 February and March
Pages 223-226
Warner, Brian D.; Stephens, Robert D.

Analysis of CCD photometric observations of three dynamical members of the Hungaria family and one inner main-belt asteroid were made in 2022 February and March at the Center for Solar System Studies.

Lightcurve Analysis of Hilda Asteroids at the Center For Solar System Studies: 2022 January-March
Pages 227-228
Warner, Brian D.; Stephens, Robert D.

CCD photometric observations of two Hilda asteroids were made between 2022 January through March. Analysis of the data for 1746 Brouwer produced a period in good agreement with previous results. The period for (7284) 1989 VW was ambiguous with possible solutions at 26.45 and 52.93 h.

Periods Determinations for Seventeen Asteroids
Pages 229-233
Farfan, Rafael González; de la Cuesta, Faustino García; Casal, Jesús Delgado; Reina Lorenz, Esteban; Fernández, Javier Ruiz; De Elías Cantalapiedra, Javier; Nogues, Ramón Naves; Andújar, José M. Fernández; Carballo, Juan-Luis González; Mañanes, Esteban Fernández; Morales, Raúl Martínez

The lightcurves for seventeen asteroids were measured from later months of 2020 to April 2022: 54 Alexandra (7.026 h), 161 Athor (7.213 h), 272 Antonia (3.854 h), 281 Lucretia (4.349 h), 302 Clarissa (14.467 h), 311 Claudia (10.446 h), 441 Bathilde (10.446 h), 554 Peraga (13.721 h), 893 Leopoldina (12.597 h), 915 Cosette (4.467 h), 934 Thuringia (8.165 h), 975 Perseverantia (7.222 h), 1090 Sumida (2.712 h), 1781 Van Biesbroeck (6.385 h), 3103 Eger (5.712 h), 5256 Farquhar (11.536 h), and 6655 Nagahama (5.224 h).

General Report of Position Observations by the ALPO Minor Planet Section for the Year 2021
Pages 233-234
Pilcher, Frederick

Observations of positions of minor planets by members of the Minor Planets Section in calendar year 2021 are summarized.

Lightcurve Photometry Opportunities: 2022 July-September
Pages 235-239
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 239-240
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 Brian D. Warner. Funding to support this web site is provided by NASA grant NSSC 80NSSC18K0851