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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.


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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456253.5 (2012-Nov-22.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0276763440363849 2.9647e-08  
q 2.70046565847894 8.4097e-08 au
tp 2456147.942576377997
(2012-Aug-08.44257638)
0.00038931 TDB
node 37.42557532120328 4.7483e-05 deg
peri 62.79189347761574 9.5596e-05 deg
i 4.440329710483393 4.1105e-06 deg
  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
 Jupiter MOID = 2.16454 au 
 T_jup = 3.330 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.78956359807994E-16 -2.479752622446136E-15 8.34651116283496E-13 1.027349882279593E-15 2.001313481603732E-13 4.760865228004793E-17
q -2.479752622446136E-15 7.072376570350333E-15 -2.054313338791513E-12 -4.545842121306111E-15 -4.987812611482709E-13 -4.702800795106827E-17
tp 8.34651116283496E-13 -2.054313338791513E-12 1.515659799773726E-7 5.473826504175108E-11 3.231551427513508E-8 4.294515142019132E-12
node 1.027349882279593E-15 -4.545842121306111E-15 5.473826504175108E-11 2.254665803642697E-9 -2.236041220309543E-9 -6.097802553988061E-11
peri 2.001313481603732E-13 -4.987812611482709E-13 3.231551427513508E-8 -2.236041220309543E-9 9.138558013759577E-9 6.172255566669698E-11
i 4.760865228004793E-17 -4.702800795106827E-17 4.294515142019132E-12 -6.097802553988061E-11 6.172255566669698E-11 1.689637682420066E-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. 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

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