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The Minor Planet Center (MPC) operates at the Smithsonian Astrophysical Observatory (SAO), under the auspices of Division III of the International Astronomical Union (IAU). The MPC is responsible for the designation of minor bodies in the solar system: minor planets; comets, in conjunction with the Central Bureau for Astronomical Telegrams (CBAT); and natural satellites (also in conjunction with CBAT). The MPC is also responsible for the collection, computation, checking and dissemination of astrometric observations and orbits for minor planets, comets, and natural satellites. The MPC derives its current operating budget from a NASA grant. Computer equipment used by the MPC is provided with support from the Tamkin Foundation.

Visitors new to this website should peruse the MPC Overview page for descriptions of the various publications and services offered.

Inquires regarding the operations of the MPC can be sent via email to Dr. Timothy B. Spahr, Director.


Latest Published Data


Observations
Total Minor Planets Comets
87341537 86768730 572807
Orbits
Total Numbered
Minor Planets
Unnumbered
Minor Planets
Comet
Apparitions
595382 312936 280611 1835
Publications
PublicationDateContents
Minor Planet Circulars
77873–78274
2012-02-07 Identifications, observation summaries, numberings, names, citations, orbital elements, comet ephemerides
Minor Planet Circulars Orbit Supplement
218151–221260
2012-02-07 Identification and orbital element details
Minor Planet Circulars Supplement
410099–411516
2012-02-07 Observation details

Census of Minor Planets


Inner/Mid Solar System
Minor Planets
Count
Atiras 17
Atens 682
Apollos 4060
Amors 3331
Hungarias 10826
Mars-Crossers 8212
Main-Belt Asteroids 555394
Mid/Outer Solar System
Minor Planets
Count
Hildas 3765
Jupiter Trojans 5412
Centaurs/Scattered Disk 415
Plutinos 243
Classical Trans-Neptunian Objects 893
Other Trans-Neptunian Objects 36
Orbits and observations of these objects are available on the MPC Database search page.


Near-Earth Objects


Near-Earth Objects 8618
1+ KM Near-Earth Objects 1255
Potentially Hazardous Asteroids 1301
The Minor Planet Center is soliciting observations for the following unconfirmed possible Near Earth Objects (NEOs),
ephemerides for which may be obtained on the NEO Confirmation Page:

Temp. Desig.UT DateR.A.Decl.Magn.Remarks
MiWa0012012 Feb. 15.309 55.8-01 4921.2Updated Feb. 17.33 UT
P102IA02012 Feb. 16.510 28.7+11 0820.6Added Feb. 16.95 UT [1 nighter]
P102IzW2012 Feb. 16.511 17.6+15 1421.3Added Feb. 16.94 UT [1 nighter]
P102IzU2012 Feb. 16.511 05.3+09 2021.9Added Feb. 16.94 UT [1 nighter]
P102IzT2012 Feb. 16.510 50.8+15 1821.5Added Feb. 16.94 UT [1 nighter]
P102IzR2012 Feb. 16.510 40.1+12 3520.8Added Feb. 16.93 UT [1 nighter]
P102IzP2012 Feb. 16.510 34.1+12 3620.8Added Feb. 16.93 UT [1 nighter]
P102IzN2012 Feb. 16.510 44.2+10 5522.1Added Feb. 16.92 UT [1 nighter]
P102IzL2012 Feb. 16.510 32.3+11 4520.4Added Feb. 16.91 UT [1 nighter]
P102IzF2012 Feb. 16.511 05.6+09 0121.8Added Feb. 16.91 UT [1 nighter]
P102IzD2012 Feb. 16.511 01.2+14 2421.2Added Feb. 16.90 UT [1 nighter]
TD761F62012 Feb. 16.608 52.3-32 3018.5Updated Feb. 17.06 UT [1 nighter]
P102Imb2012 Feb. 15.510 42.2+02 1420.5Added Feb. 16.05 UT [1 nighter]
P102Im82012 Feb. 15.511 22.2-01 0119.9Added Feb. 16.05 UT [1 nighter]
P102GJz2012 Feb. 15.310 07.0+15 5321.6Added Feb. 15.97 UT [1 nighter]
P102FPf2012 Feb. 15.310 04.2+13 1221.7Added Feb. 15.80 UT [1 nighter]
P102FOT2012 Feb. 15.309 49.8+18 3221.7Added Feb. 15.80 UT [1 nighter]
P102FLo2012 Feb. 15.310 21.2+15 0619.8Updated Feb. 17.10 UT
P102FL22012 Feb. 15.310 08.6+16 3221.6Updated Feb. 16.71 UT
P102FL12012 Feb. 15.310 18.6+16 3521.6Updated Feb. 16.67 UT
P102CIT2012 Feb. 14.309 06.2+04 4622.5Added Feb. 14.81 UT [1 nighter]
P102Aqd2012 Feb. 13.510 27.8+50 2220.5Added Feb. 13.90 UT [1 nighter]
P102Aok2012 Feb. 13.308 21.6+24 4622.4Added Feb. 13.89 UT [1 nighter]
P102AlJ2012 Feb. 13.308 33.1+25 0422.2Added Feb. 13.87 UT [1 nighter]
P102AlM2012 Feb. 13.310 08.3-01 0521.6Added Feb. 13.87 UT [1 nighter]
P102AlD2012 Feb. 13.309 09.1+19 5221.9Added Feb. 13.86 UT [1 nighter]
P102Alw2012 Feb. 13.308 18.9+31 0321.2Updated Feb. 17.32 UT
TCA5D742012 Feb. 12.108 57.2+23 0622.1Updated Feb. 16.51 UT
spacer Observers are encouraged to view and contribute to the NEOCP Blog in order to communicate with other observers in near real-time regarding which possible NEOs are being targeted.


Comets


Ephemeris Positions (R.A. order) of Selected Numbered and Unnumbered Comets for 2012 Feb 17.0 TT

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