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JPL Small-Body Database Browser
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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 151 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1617533746865658 2.4282e-08  
a 2.770007817238589 3.8899e-09 au
q 2.321949704892079 6.7349e-08 au
i 5.214024459388733 2.9724e-06 deg
node 276.459727956585 2.3568e-05 deg
peri 36.34500250133647 2.5125e-05 deg
M 134.5304350953412 8.9944e-06 deg
tp 2458371.228641816470
(2018-Sep-09.72864182)
4.155e-05 TDB
period 1683.914043580728
4.61
3.5471e-06
9.711e-09
d
yr
n .21378763445341 4.5033e-10 deg/d
Q 3.218065929585099 4.5191e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3402  
   data-arc span      56191 days (153.84 yr)  
   first obs. used      1866-06-21  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50291  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 00:58:15  

Additional Information
 Earth MOID = 1.31019 au 
 Jupiter MOID = 2.05485 au 
 T_jup = 3.313 
[ 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 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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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
1916-Feb-15 17:06 < 00:01 Iris 0.0208749085554711 0.0208735685704783 0.0208762486358626 4.7625419822684 4.7625419244442 2420909.212756629 0.524458554228373 101.478836224287 26.0625448821372 -51.1654961325383 95269.9227679687 T 151 CATAB v2.0f-lin.ifort 2020-May-20 00:58:41 2020-May-20 00:58
1934-Jul-23 20:09 < 00:01 Iris 0.0174774439076328 0.0174766663841344 0.0174782214976158 4.86910631387355 4.86910624632036 2427642.339775342 0.39131971903428 82.1644060009187 25.9971351873165 68.3552245408119 94176.6609206174 T 151 CATAB v2.0f-lin.ifort 2020-May-20 00:58:41 2020-May-20 00:58
1952-Dec-27 18:53 < 00:01 Iris 0.0170498508260413 0.0170492888258894 0.0170504128365944 4.87418160683398 4.87418153765873 2434374.286487075 0.297416183934281 63.2397307291034 26.0239328137432 -79.6337273484075 96644.7606303688 T 151 CATAB v2.0f-lin.ifort 2020-May-20 00:58:41 2020-May-20 00:58
1971-May-31 05:20 < 00:01 Iris 0.0196500587841298 0.0196494091111927 0.0196507084645973 4.96315530026245 4.96315524131686 2441102.722305315 0.190540746947114 45.7040226998756 26.0379768516473 59.1559855339565 102345.848600807 T 151 CATAB v2.0f-lin.ifort 2020-May-20 00:58:41 2020-May-20 00:58
1989-Nov-05 05:30 < 00:01 Iris 0.0469037196790222 0.0469031036155937 0.0469043357425329 5.13721128935195 5.13721126549372 2447835.729065965 0.107681099033061 31.2526592490414 25.9387839689234 19.4056406207081 229966.354766547 T 151 CATAB v2.0f-lin.ifort 2020-May-20 00:58:41 2020-May-20 00:58
2008-Apr-14 15:09 < 00:01 Iris 0.0352585546416258 0.0352579904017277 0.0352591188815831 5.05572704044418 5.05572700819453 2454571.131279358 0.0987496794198029 28.7316311938633 25.9105198481543 28.1729746985523 188154.4004428 T 151 CATAB v2.0f-lin.ifort 2020-May-20 00:58:41 2020-May-20 00:58
2026-Sep-19 04:25 < 00:01 Iris 0.0390835244510601 0.0390827714469147 0.0390842774562899 5.07163250361228 5.07163247461004 2461302.684244963 0.158129431094092 40.1310140408512 25.9197353924362 27.5955271522944 166044.500520691 T 151 CATAB v2.0f-lin.ifort 2020-May-20 00:58:41 2020-May-20 00:58

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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