scholarly journals 20. Positions and Motions of Minor Planets, Comets and Satellites

1979 ◽  
Vol 17 (1) ◽  
pp. 133-144
Author(s):  
B. G. Marsden
Keyword(s):  
Solar System ◽  
Working Group ◽  
Outer Part ◽  
Minor Planet ◽  
Minor Planets ◽  
The Past

The past triennium has been noteworthy for several significant discoveries in the outer part of the solar system. The discovery of the rings of Uranus was inspired by the activities of Commission 20’s new Working Group on Occultations. Although the discovery of a probable Plutonian satellite has not yet been completely confirmed, the implication that Pluto’s mass is only 0.002 earth masses may make it desirable to consider whether Pluto should be relegated to minor-planet status. The orbit of Pluto is in fact not greatly dissimilar to that of the object classified as the new minor planet (2060) Chiron, which was found to have its aphelion near the orbit of Uranus and its perihelion just inside the orbit of Saturn.

scholarly journals DIVISION III / COMMISSION 15 / WORKING GROUP PHYSICAL STUDY OF MINOR PLANETS

2007 ◽  
Vol 3 (T26B) ◽  
pp. 131-132
Author(s):  
Walter F. Huebner ◽  
Alberto Cellino ◽  
Edward F. Tedesco ◽  
Dominique Bockelee-Morvan ◽  
Yuehua Ma ◽  
...  
Keyword(s):  
Physical Properties ◽  
Working Group ◽  
Business Meeting ◽  
Minor Planet ◽  
Minor Planets ◽  
Web Page ◽  
Division Iii ◽  
Physical Study

The meeting of the Physical Properties of the Minor Planets Working Group of IAU Commission 15 took place on 24 August, and was devoted to purely scientific matters, since other topics (organization of the Minor Planet WG, need of a new web page, election of the new chairman) had been already discussed during the business meeting of Commission 15, on 22 August. A brief summary of the talks given during the meeting is given in what follows.

scholarly journals Commission 20: Positions and Motions of Minor Planets, Comets and Satellites

2005 ◽  
Vol 1 (T26A) ◽  
pp. 153-160
Author(s):  
Giovanni B. Valsecchi ◽  
Julio A. Fernández ◽  
J.-E. Arlot ◽  
E.L.G. Bowell ◽  
Y. Chernetenko ◽  
...  
Keyword(s):  
Solar System ◽  
Minor Planets ◽  
Orbital Elements ◽  
The Past ◽  
Earth Object ◽  
Solar System Bodies

The past triennium has continued to see a huge influx of astrometric positions of small solar system bodies provided by near-Earth object (NEO) surveys. As a result, the size of the orbital databases of all populations of small solar system bodies continues to increase dramatically, and this in turn allows finer and finer analyses of the types of motion in various regions of the orbital elements space.

scholarly journals Possible Features of IAU Standards

1992 ◽  
Vol 9 ◽  
pp. 155-159
Author(s):  
P. K. Seidelmann
Keyword(s):  
Solar System ◽  
Internal Consistency ◽  
Working Group ◽  
The Past ◽  
Cartographic Coordinates ◽  
Planets And Satellites ◽  
Standard Values ◽  
Best Estimates

In the past, the IAU has adopted standard values for some constants, primarily for use with solar system ephemerides. The constants adopted in 1976 were specifically adjusted to provide internal consistency. In each case, when constants have been adopted, the changes have reflected accuracy improvements, and the purpose has been to encourage the accomplishment of better science.Over the past 12 years, the Working Group on Cartographic Coordinates has issued triennial reports giving the best values for the sizes and rotations for the planets and satellites. This working group now is an IAU/IAG/COSPAR working group reflecting the different organizations that have recognized the benefits of this group. This is an example of a properly functioning working group, which provides the best values on a regular basis. The IUGG also provides best estimates triennially for values of interest in geodesy and geodynamics.

scholarly journals 15. Physical Study of Comets, Minor Planets and Meteorites

1979 ◽  
Vol 17 (1) ◽  
pp. 73-102
Author(s):  
N.B. Richter
Keyword(s):  
Solar System ◽  
Considerable Increase ◽  
Solar Nebula ◽  
Past History ◽  
Minor Planets ◽  
The Past ◽  
Physical Study ◽  
History Of

Comets, minor planets and meteorites provide us with valuable information about the past history of the solar system. They belong to the most primitive samples of the primordial solar nebula. Over the past years, we can record a considerable increase of interest in these bodies.

scholarly journals Commission 20: Positions and Motions of Minor Planets, Comets and Satellites (Positions et Mouvements des Petites Planetes, des Cometes et des Satellites)

1991 ◽  
Vol 21 (1) ◽  
pp. 187-204
Author(s):  
R. M. West
Keyword(s):  
Solar System ◽  
Theoretical Models ◽  
Dynamical Analysis ◽  
Minor Planets ◽  
Secular Acceleration ◽  
The Past ◽  
Broad Field ◽  
Voyager 2

The past triennium was characterized by important advances in several directions within the broad field of this Commission. Among the most exciting events were the Phobos 2 and Voyager 2 missions to Mars/Phobos and Neptune/Triton; their navigation was critically dependent on precise space- and ground-based observations as well as refined theoretical models of the motions in the solar system. Among many other achievements, the secular acceleration of Phobos was accurately measured and the dynamical analysis of the ring-like arcs at Neptune has just begun.

Photometric observations of the main-belt asteroid 665 Sabine and Minor Planet Bulletin

2021 ◽  
Author(s):  
Nick Sioulas
Keyword(s):  
Solar System ◽  
Rotation Period ◽  
Space Mission ◽  
Minor Planet ◽  
Minor Planets ◽  
Official Publication ◽  
Main Belt ◽  
Dwarf Planets ◽  
Photometric Observations ◽  
The Town

<p><strong>Photometric observations of the main-belt asteroid 665 Sabine and Minor Planet Bulletin</strong></p> <p> </p> <p>Nick Sioulas</p> <p>NOAK Observatory, Stavraki (IAU code L02) Ioannina, Greece ([email protected])</p> <p><strong>Introduction</strong></p> <p>In this work, the photometric observations of the main-belt asteroid 665 Sabine were conducted from the NOAK Observatory, in Greece in order to determine its synodic rotation period. The results were submitted to Asteroid Lightcurve Photometry Database (ALCDEF) and Minor Planet Bulletin.</p> <p><strong>Abstract</strong></p> <p>The Minor Planet Bulletin is the official publication of the Minor Planets Section of the Association of Lunar and Planetary Observers (ALPO). All amateurs and professionals can publish their asteroid photometry results, including lightcurves, H-G parameters, color indexes, and shape/spin axis models. It is also the refereed journal by the SAO/NASA ADS. All MPB papers are indexed in the ADS.</p> <p> </p> <p>The lightcurve of an asteroid can be used to determine the period, the shape and its size. We can also understand its composition (if it is a solid body or something else) and the orientation of the spin axes. Due to the high number of the asteroids the need of measuring them is important and all available telescopes are necessary to track them.</p> <p> </p> <p>My amateur observatory participates in the effort to record all these objects in the Solar System. It also conducts observations of various objects and other phenomena such as exoplanet transits, contributing to the Ariel Space Mission with the Exoclock Project, asteroid occultations and comet photometry.</p> <p>The observatory is registered in IAU as L02, «NOAK Observatory, Stavraki», in the town of Ioannina, Greece.</p> <p> </p> <p><strong>References</strong></p> <p>[1] Roger Dymock: Asteroids and Dwarf Planets</p> <p>[2] Brian D. Warner: A Practical Guide to Lightcurve Photometry and Analysis</p> <p>[3] http://alcdef.org/index.php</p> <p>[4] http://www.minorplanet.info/MPB/</p>

scholarly journals Commission 20: Positions and Motions of Minor Planets, Comets and Satellites

1997 ◽  
Vol 23 (1) ◽  
pp. 215-229
Keyword(s):  
Time Delay ◽  
Minor Planet ◽  
Minor Planets ◽  
The Past ◽  
Current Period

In the past triennium, the output of the Commission continued its explosive growth within a rather broad range of activities. In comparison with the previous triennium (which also saw impressive growth), the current period witnessed a 26% increase in the number of numbered minor planets (7041 minor planets), a 46% increase in the number of minor planet orbits computed (14 154) and a 187% increase in the number of optical Minor Planet observations (260 616). In addition, there were 65 radar Doppler and time delay measurements made during the triennium bringing the total to 269 observations of 40 minor planets and 5 comets.

scholarly journals IAU Division III Commission 15: Physical Studies of Comets and Minor Planets

2005 ◽  
Vol 1 (T26A) ◽  
pp. 121-141
Author(s):  
Edward F. Tedesco ◽  
Walter F. Huebner ◽  
D. Bockelée-Morvan ◽  
A. W. Harris ◽  
N. Kiselev ◽  
...  
Keyword(s):  
Working Group ◽  
Minor Planet ◽  
Minor Planets ◽  
Division Iii ◽  
Working Groups

The report of Commission 15 was prepared primarily by the chairpersons of its two working groups: the Minor Planet Working Group and the Comet Working Group. In particular, the Minor Planet section was created by A. Cellino with a little help from E. Tedesco and the Comet section by T. Yamamoto with the assistance of D. Bockelée-Morvan, W. Huebner, A. Bhardwaj, D. Biesecker, L. Jorda, H. Kawakita, H. U. Keller, H. Kimura, A. Kouchi, and D. Prialnik. E. Tedesco was responsible for the Introduction, final editing, and merging of the two reports.

scholarly journals Working Group on Planetary System Nomenclature (Wgpsn): (Groupe de Travail Pour la Nomenclature du Systeme Planetaire)

2000 ◽  
Vol 24 (1) ◽  
pp. 439-441
Author(s):  
K. Aksnes ◽  
M. E. Davies ◽  
C. de Bergh ◽  
M. Ya. Marov ◽  
B.G. Marsden ◽  
...  
Keyword(s):  
Solar System ◽  
Executive Committee ◽  
Working Group ◽  
Planetary System ◽  
Minor Planet ◽  
General Assembly ◽  
Final Approval ◽  
The Moon ◽  
Galilean Satellites

Since July 1996, 815 new names on features on bodies in the Solar System have been assigned by the WGPSN and approved at the IAU General Assembly in Kyoto in 1997. Of these names, 666 were for Venus, 17 for Mars, 3 for the Moon, 125 for the Galilean satellites, 3 for the Uranian satellite Miranda, and 1 for the minor planet Ida. 71 additional names mostly on Venus have been selected and have been given or are awaiting provisional approval by the IAU Executive Committee (EC). These names are up for final approval at the next IAU General Assembly.

scholarly journals COMMISSION 15: PHYSICAL STUDY OF COMETS AND MINOR PLANETS

2008 ◽  
Vol 4 (T27A) ◽  
pp. 154-162
Author(s):  
Walter F. Huebner ◽  
Alberto Cellino ◽  
Edward F. Tedesco ◽  
Dominique Bockelée-Morvan ◽  
Dmitrij F. Lupishko ◽  
...  
Keyword(s):  
Working Group ◽  
Minor Planet ◽  
Minor Planets ◽  
Physical Study ◽  
Working Groups

The Commission 15 report was prepared primarily by the chairpersons of the two working groups: T. Yamamoto of the Comet Working Group and R. A. Gil-Hutton of the Minor Planet Working Group. In particular, the Comet section was produced by T. Yamamoto with the assistance of D. Bockelée-Morvan, H. Kawakita, and D. Prialnik, while the Minor Planet section was produced by R. A. Gil-Hutton with the assistance of A. Cellino, A. W. Harris (DLR), R. Jedicke, A.-C. Levasseur-Regourd, R. M. Schulz, T. B. Spahr, and P. Vernazza. W. F. Huebner was responsible for the Introduction. The final editing and merging of the various sections and subsections of the report was carried out by the Commission Secretary, D. C. Boice.

Sign in / Sign up

Export Citation Format

Share Document