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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02723022032554956 3.8166e-08  
a 2.778311919026987 1.3563e-08 AU
q 2.702657873338782 1.0493e-07 AU
i 4.43923366812931 5.2152e-06 deg
node 37.41944088121362 5.7433e-05 deg
peri 63.72275242329999 0.00011242 deg
M 180.6194451487345 9.73e-05 deg
tp 2457843.335446680843
(2017-Mar-30.83544668)
0.00045768 JED
period 1691.491929304638
4.63
1.2386e-05
3.391e-08
d
yr
n .2128298656133664 1.5585e-09 deg/d
Q 2.853965964715193 1.3933e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1565  
   data-arc span      35067 days (96.01 yr)  
   first obs. used      1918-09-06  
   last obs. used      2014-09-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51905  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:45:32  

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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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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