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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 ]

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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02814573769734377 3.0216e-08  
a 2.776974309140613 9.0302e-09 au
q 2.698814318643279 8.5854e-08 au
i 4.432578013768024 4.1046e-06 deg
node 37.31714410863869 4.6853e-05 deg
peri 69.10163762236228 9.2805e-05 deg
M 240.8571285260634 8.0366e-05 deg
tp 2459559.899123915433
(2021-Dec-11.39912392)		 0.0003775 TDB
period 1690.270530819042
4.63		 8.2447e-06
2.257e-08		 d
yr
n .212983657607494 1.0389e-09 deg/d
Q 2.855134299637947 9.2843e-09 au
   Orbit Determination Parameters
   # obs. used (total)      3064  
   data-arc span      37327 days (102.20 yr)  
   first obs. used      1918-09-06  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4328  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:52:20  

Additional Information
 Earth MOID = 1.71965 au 
 Jupiter MOID = 2.16454 au 
 T_jup = 3.330 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456316.5 (2013-Jan-24.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02758263450269048 2.942e-08  
q 2.700494867572019 8.36e-08 au
tp 2456147.909954703284
(2012-Aug-08.40995470)		 0.00039043 TDB
node 37.42386726944698 4.6716e-05 deg
peri 62.78793287323752 9.5455e-05 deg
i 4.440336129698336 4.1103e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      3064  
   data-arc span      37327 days (102.20 yr)  
   first obs. used      1918-09-06  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4328  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:52:20  

Additional Information
 Jupiter MOID = 2.16454 au 
 T_jup = 3.330 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.65565020610051E-16 -2.446475467635386E-15 8.016634883007516E-13 9.635964609025744E-16 1.942889789993146E-13 5.206816100129098E-17
q -2.446475467635386E-15 6.988937070023616E-15 -1.993724874601611E-12 -4.453601264612311E-15 -4.885819073959051E-13 -4.024871062780561E-17
tp 8.016634883007516E-13 -1.993724874601611E-12 1.524339031055861E-7 4.778679358294758E-11 3.251374363215138E-8 4.31334351506747E-12
node 9.635964609025744E-16 -4.453601264612311E-15 4.778679358294758E-11 2.182401345450121E-9 -2.165480930216547E-9 -6.13260701537979E-11
peri 1.942889789993146E-13 -4.885819073959051E-13 3.251374363215138E-8 -2.165480930216547E-9 9.111739271636083E-9 6.207408949886496E-11
i 5.206816100129098E-17 -4.024871062780561E-17 4.31334351506747E-12 -6.13260701537979E-11 6.207408949886496E-11 1.689462644551947E-11

[ 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. 2020-October); 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 44 CATAB v2.0f-lin.ifort 2020-Dec-18 01:52:27 2020-Dec-18 01:52

Alternate Designations
 A888 CA = 1944 FE 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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