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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 79 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1011150966651925 4.2507e-08  
a 3.021341188267174 1.2402e-08 au
q 2.715837981957011 1.2949e-07 au
i 10.75969479193454 4.4933e-06 deg
node 38.00331051268157 2.1126e-05 deg
peri 354.3410573560904 2.8697e-05 deg
M 155.8725063818978 1.9791e-05 deg
tp 2458169.951302058492
(2018-Feb-20.45130206)
0.00010407 TDB
period 1918.218537696311
5.25
1.1811e-05
3.234e-08
d
yr
n .1876741324960517 1.1555e-09 deg/d
Q 3.326844394577337 1.3656e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2742  
   data-arc span      42092 days (115.24 yr)  
   first obs. used      1905-05-07  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38119  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:19:35  

Additional Information
 Earth MOID = 1.72229 au 
 Jupiter MOID = 2.10877 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 10.1   n/a MPO502159 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. 2019-August); 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

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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
2016-Apr-20 14:07 < 00:01 Inter 0.00542345539429434 0.00542273301420686 0.00542417801504301 6.78928962955621 6.78928923198191 2457499.088332592 0.397384383863095 99.9376203034067 28.5141375642147 76.7187430331888 27741.7066139076 T 79 CATAB v2.0f-lin.ifort 2020-Aug-24 22:19:46 2020-Aug-24 22:19
2029-Mar-14 19:57 < 00:01 Inter 0.0323821946021044 0.0323801609651948 0.0323842283194399 7.82649884852338 7.82649879076103 2462210.331395781 0.31636301237677 131.574544121857 28.5863803098928 -40.7637276191047 114077.557052502 T 79 CATAB v2.0f-lin.ifort 2020-Aug-24 22:19:46 2020-Aug-24 22:19

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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