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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 112 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .166758783704476 2.0259e-08  
a 3.147230920863619 7.6689e-09 au
q 2.622402520463284 6.7107e-08 au
i 2.206916722160976 3.645e-07 deg
node 69.95133310178959 1.2386e-05 deg
peri 245.102872897598 1.168e-05 deg
M 285.363648978624 3.7342e-06 deg
tp 2459819.304147458470
(2022-Aug-27.80414746)
2.1744e-05 TDB
period 2039.347998691097
5.58
7.4539e-06
2.041e-08
d
yr
n .1765270077647644 6.4522e-10 deg/d
Q 3.672059321263954 8.9477e-09 au
  Orbit Determination Parameters
   # obs. used (total)      4911  
   data-arc span      56516 days (154.73 yr)  
   first obs. used      1866-10-01  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40622  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:31:11  

Additional Information
 Earth MOID = 1.60902 au 
 Jupiter MOID = 1.62158 au 
 T_jup = 3.186 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456126.5 (2012-Jul-18.0) TDB
Reference: JPL 112 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1575956122437971 1.9709e-08  
q 2.661590406975189 6.3641e-08 au
tp 2455720.546235111383
(2011-Jun-08.04623511)
2.2344e-05 TDB
node 70.2164316786872 1.2229e-05 deg
peri 243.5044183083536 1.1554e-05 deg
i 2.219296338199991 3.6852e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      4911  
   data-arc span      56516 days (154.73 yr)  
   first obs. used      1866-10-01  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40622  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:31:11  

Additional Information
 Jupiter MOID = 1.62158 au 
 T_jup = 3.186 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.884536398348204E-16 -1.248834392288415E-15 -1.405629033409576E-14 3.1582224846781E-15 2.323116301327613E-14 -8.740146429519349E-16
q -1.248834392288415E-15 4.050159116483257E-15 -8.16101901440371E-15 -1.047859564990549E-14 -7.838117000761017E-14 2.839028686881469E-15
tp -1.405629033409576E-14 -8.16101901440371E-15 4.992428394883853E-10 8.701750519586206E-11 -1.211475006027295E-11 -2.436707701946717E-12
node 3.1582224846781E-15 -1.047859564990549E-14 8.701750519586206E-11 1.495509826763894E-10 -1.344354586275927E-10 -2.758736721075313E-12
peri 2.323116301327613E-14 -7.838117000761017E-14 -1.211475006027295E-11 -1.344354586275927E-10 1.335029439867076E-10 2.265914985205448E-12
i -8.740146429519349E-16 2.839028686881469E-15 -2.436707701946717E-12 -2.758736721075313E-12 2.265914985205448E-12 1.358058697562146E-13

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 8.20   n/a E2021B10 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. 2020-October); 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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