Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
272 Antonia (A888 CA)
Classification: Main-belt Asteroid          SPK-ID: 2000272
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02814573894990603 3.0455e-08  
a 2.776974309565632 9.128e-09 au
q 2.698814315578002 8.6355e-08 au
i 4.43257802344846 4.1049e-06 deg
node 37.31714856791221 4.7624e-05 deg
peri 69.10163346816825 9.3181e-05 deg
M 240.8571280012839 8.0377e-05 deg
tp 2459559.899126507800
(2021-Dec-11.39912651)
0.00037756 TDB
period 1690.270531207089
4.63
8.3339e-06
2.282e-08
d
yr
n .2129836575585979 1.0501e-09 deg/d
Q 2.855134303553262 9.3849e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3029  
   data-arc span      37306 days (102.14 yr)  
   first obs. used      1918-09-06  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43437  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:28  

Additional Information
 Earth MOID = 1.71965 au 
 Jupiter MOID = 2.16454 au 
 T_jup = 3.330 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.6   n/a MPO435697  
diameter diameter 26.870 km 0.286 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.8548 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2008) Minor Planet Bull. 35, 135-138.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.128   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
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 (A888 CA)          Discovered 1888-Feb-04 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2070-Jun-24 09:16 00:01 Ceres 0.0464194851136746 0.0464150279825347 0.046423942427759 2.73612678652472 2.73612346027085 2477286.885895106 1.22489393108893 262.400606201723 29.7535326129667 33.7271697625755 129148.702409447 T 42 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:36 2020-Nov-13 04:31

Alternate Designations
 A888 CA = 1944 FE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-02 06:56 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin