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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02723022135113633 3.8129e-08  
a 2.778311918154099 1.3532e-08 AU
q 2.702657869640263 1.0482e-07 AU
i 4.439234510642362 5.1969e-06 deg
node 37.41943831482408 5.7314e-05 deg
peri 63.72276195959059 0.00011207 deg
M 180.6194387558007 9.7007e-05 deg
tp 2457843.335476321408
(2017-Mar-30.83547632)
0.00045634 JED
period 1691.491928507491
4.63
1.2358e-05
3.383e-08
d
yr
n .2128298657136664 1.5549e-09 deg/d
Q 2.853965966667936 1.39e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1581  
   data-arc span      35271 days (96.57 yr)  
   first obs. used      1918-09-06  
   last obs. used      2015-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52276  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 15:59:13  

Additional Information
 Earth MOID = 1.7229 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 10.6 mag n/a MPO263345  
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-Feb); 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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