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651 Antikleia (A907 TK)
Classification: Main-belt Asteroid          SPK-ID: 2000651
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1012874438613961 1.4431e-08  
a 3.020842967031194 1.2158e-08 au
q 2.714869504593929 4.9559e-08 au
i 10.76069062563117 8.8077e-07 deg
node 38.00203482835962 2.3679e-06 deg
peri 354.2830970481472 1.0728e-05 deg
M 193.4820440253537 1.3623e-05 deg
tp 2460087.552291494253
(2023-May-23.05229149)
7.5419e-05 TDB
period 1917.744083926619
5.25
1.1578e-05
3.17e-08
d
yr
n .1877205634564613 1.1333e-09 deg/d
Q 3.326816429468459 1.339e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2836  
   data-arc span      42317 days (115.86 yr)  
   first obs. used      1905-05-07  
   last obs. used      2021-03-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38403  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:14:19  

Additional Information
 Earth MOID = 1.72018 au 
 Jupiter MOID = 2.11001 au 
 T_jup = 3.212 
[ 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 10.13   n/a E2021B10 IRAS observations used: 3
diameter diameter 31.895 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 20.299 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Sada, P.V.; Canizales, E.D.; Armada, E.M. (2005) Minor Planet Bull. 32, 73-75.]
[Galad, A.; Kornos, L. (2008) Minor Planet Bull. 35, 144-146.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.172   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.847   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=7.51, mean=12.06, max.=19.67) deg.
U-B UB 0.489   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=7.51, mean=12.06, max.=19.67) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

651 Antikleia (A907 TK)          Discovered 1907-Oct-04 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A907 TK = 1957 JF1 = A905 JB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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