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272 Antonia
Classification: Main-belt Asteroid          SPK-ID: 2000272
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02705530263285305 3.6066e-08  
a 2.778388563804656 1.2418e-08 au
q 2.703218420379263 1.0004e-07 au
i 4.439377639548137 4.7605e-06 deg
node 37.40884317760606 5.5157e-05 deg
peri 64.04129588729252 0.00010624 deg
M 265.4149416414085 9.2644e-05 deg
tp 2457844.934675856143
(2017-Apr-01.43467586)
0.00043604 JED
period 1691.561924100439
4.63
1.1341e-05
3.105e-08
d
yr
n .2128210589697716 1.4268e-09 deg/d
Q 2.853558707230049 1.2754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1812  
   data-arc span      35523 days (97.26 yr)  
   first obs. used      1918-09-06  
   last obs. used      2015-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51468  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:32:10  

Additional Information
 Earth MOID = 1.72338 au 
 Jupiter MOID = 2.17404 au 
 T_jup = 3.329 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.7 mag n/a MPO358626  
diameter diameter 25.35 km 1.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
rotation period rot_per 3.8548 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2008) Minor Planet Bul. 35, 135-138.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
geometric albedo albedo 0.1443   0.017 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

272 Antonia          Discovered 1888-Feb-04 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1944 FE 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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