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90 Antiope (A866 TA)
Classification: Main-belt Asteroid          SPK-ID: 2000090
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1664995144925148 3.2771e-08  
a 3.148725610415441 8.5975e-09 au
q 2.624464325011123 1.049e-07 au
i 2.206751712551211 3.6301e-06 deg
node 69.96053962415733 9.7006e-05 deg
peri 244.9419893952083 9.7534e-05 deg
M 215.6355440270668 1.0831e-05 deg
tp 2459818.886448736922
(2022-Aug-27.38644874)
6.1655e-05 TDB
period 2040.800968352833
5.59
8.3585e-06
2.288e-08
d
yr
n .1764013275094447 7.2249e-10 deg/d
Q 3.672986895819759 1.0029e-08 au
  Orbit Determination Parameters
   # obs. used (total)      4348  
   data-arc span      56142 days (153.71 yr)  
   first obs. used      1866-10-01  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40996  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:06:52  

Additional Information
 Earth MOID = 1.61168 au 
 Jupiter MOID = 1.62088 au 
 T_jup = 3.185 
[ 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 8.1   n/a MPO502153 IRAS observations used: 3
diameter diameter 115.974 km 1.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.509 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Hansen, A.T.; Arentoft, T.; Lang, K. (1997) Minor Planet Bull. 24, 17.]
[Michalowski, T.; Colas, F.; Kwiatkowski, T.; Kryszczynska, A.; et al. (2001) Astron. Astrophys. 378, L14-L16.]
[Michalowski, T.; Colas, F.; Kwiatkowski, T.; Kryszczynska, A.; et al. (2002) Astron. Astrophys. 396, 293-299; (2001) IAUC 7757.]
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Descamps, P.; et al. (2005) Abstr. IAU Symp. 229, p. 87; also http://portail.imcce.fr/page.php?nav=en/observateur/campagnes_obs/a ntiope]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Descamps, P.; Marchis, F.; Michalowski, T.; Vachier, F.; et al. (2007) Icarus 187, 482-499.]
[Descamps, P.; Marchis, F.; Micalowski, T.; Berthier, J.; et al. (2009) Icarus 203, 102-111.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Bartczak, P.; Michalowski, T.; Santana-Ros, T.; Dudzinski, G. (2014) Mon. Not. Royal Ast. Soc. 443, 1802-1809.]
geometric albedo albedo 0.058   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.688   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=8.58, mean=12.61, max.=16.29) deg.
U-B UB 0.317   0.047 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=8.58, mean=12.61, max.=16.29) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   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)

90 Antiope (A866 TA)          Discovered 1866-Oct-01 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A866 TA = 1952 BK2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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