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88 Thisbe (A866 LA)
Classification: Main-belt Asteroid          SPK-ID: 2000088
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 152 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1617533751564429 2.4278e-08  
a 2.770007817017781 3.888e-09 au
q 2.321949703405424 6.7334e-08 au
i 5.214024456296815 2.9721e-06 deg
node 276.4597280600763 2.3553e-05 deg
peri 36.34500286167293 2.511e-05 deg
M 134.5304349053549 8.9926e-06 deg
tp 2458371.228642780381
(2018-Sep-09.72864278)
4.154e-05 TDB
period 1683.91404337938
4.61
3.5454e-06
9.707e-09
d
yr
n .2137876344789727 4.5011e-10 deg/d
Q 3.218065930630137 4.5169e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3434  
   data-arc span      56340 days (154.25 yr)  
   first obs. used      1866-06-21  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50087  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:23:26  

Additional Information
 Earth MOID = 1.31019 au 
 Jupiter MOID = 2.05485 au 
 T_jup = 3.313 
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Orbital Elements at Epoch 2452967.5 (2003-Nov-24.0) TDB
Reference: JPL 152 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .16409937361061 2.4308e-08  
q 2.313249894051191 6.7529e-08 au
tp 2453327.597604980930
(2004-Nov-18.09760498)
3.8009e-05 TDB
node 276.782024670372 2.3543e-05 deg
peri 36.64137688793635 2.5042e-05 deg
i 5.218089279339609 2.9735e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3434  
   data-arc span      56340 days (154.25 yr)  
   first obs. used      1866-06-21  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50087  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:23:26  

Additional Information
 Jupiter MOID = 2.05485 au 
 T_jup = 3.313 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.908774248048465E-16 -1.639583487770647E-15 -3.219209642290792E-13 3.240018777002461E-16 -5.571975608134788E-14 -4.057998928115873E-16
q -1.639583487770647E-15 4.560210915930121E-15 9.01813357239481E-13 -2.114764142097707E-15 1.565641287538723E-13 1.245064191623935E-15
tp -3.219209642290792E-13 9.01813357239481E-13 1.444712874275401E-9 -2.372104354620506E-13 3.26323320524276E-10 8.61400844373961E-13
node 3.240018777002461E-16 -2.114764142097707E-15 -2.372104354620506E-13 5.542938396806303E-10 -5.519531305633928E-10 -4.429356136561297E-12
peri -5.571975608134788E-14 1.565641287538723E-13 3.26323320524276E-10 -5.519531305633928E-10 6.270835712526384E-10 4.611587505818978E-12
i -4.057998928115873E-16 1.245064191623935E-15 8.61400844373961E-13 -4.429356136561297E-12 4.611587505818978E-12 8.841583985171948E-12

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 7.2   n/a MPO502153 IRAS observations used: 5
magnitude slope G 0.14   n/a PDS3 (MPC 17257) Fit
diameter diameter 232 km n/a Dunham occult. list: Millis et al. 1983 Yeomans E-mail 2001-Apr-04
rotation period rot_per 6.042 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Choloniewski, J. (1979) Acta Astron. 29, 105-107.]
[Schober, H.J.; Scaltriti, F.; Zappala, V. (1979) Astron. Astrophys. Suppl. Ser. 36, 1-8.]
[Di Martino, M.; Zappala, V.; De Sanctis, G.; Cacciatori, S. (1987) Icarus 69, 338-353.]
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1988) Icarus 76, 19-77.]
[Lagerkvist, C.I.; Magnusson, P.; Williams, I.P.; Buontempo, M.E.; et al. (1988) Astron. Astrophys. Suppl. Ser. 73, 395-405.]
[Magnusson, P. (1990) Icarus 85, 229-240.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1991) Icarus 89, 44-64.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
[Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
geometric albedo albedo 0.0671   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
B-V BV 0.681   0.008 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=9; phase (min.=2.94, mean=10.99, max.=19.67) deg.
U-B UB 0.305   0.013 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=2.94, mean=5.76, max.=14.70) deg.
Tholen spectral type spec_T CF   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B B   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)

88 Thisbe (A866 LA)          Discovered 1866-Jun-15 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A866 LA = A903 PA = A906 BL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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