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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 154 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1617533751549492 2.4278e-08  
a 2.770007817009361 3.8815e-09 au
q 2.321949703402504 6.7333e-08 au
i 5.214024446754373 2.969e-06 deg
node 276.4597281957084 2.3502e-05 deg
peri 36.34500289575983 2.5049e-05 deg
M 134.5304347950898 8.9808e-06 deg
tp 2458371.228643299020
(2018-Sep-09.72864330)
4.148e-05 TDB
period 1683.914043371703
4.61
3.5394e-06
9.69e-09
d
yr
n .2137876344799475 4.4936e-10 deg/d
Q 3.218065930616218 4.5094e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3495  
   data-arc span      56380 days (154.36 yr)  
   first obs. used      1866-06-21  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49676  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:33:31  

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 154 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:41 2020-Nov-13 04:33
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 154 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:41 2020-Nov-13 04:33
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 154 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:41 2020-Nov-13 04:33
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 154 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:41 2020-Nov-13 04:33
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 154 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:41 2020-Nov-13 04:33
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 154 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:41 2020-Nov-13 04:33
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 154 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:41 2020-Nov-13 04:33

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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