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36 Atalante (A855 TA)
Classification: Main-belt Asteroid          SPK-ID: 2000036
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 96 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3052054746226939 4.5352e-08  
a 2.747441547606039 6.9658e-09 au
q 1.90890734607083 1.2579e-07 au
i 18.37013537799679 5.7901e-06 deg
node 358.2003454818485 1.2105e-05 deg
peri 47.81127477962995 1.4694e-05 deg
M 69.60163856478567 8.1163e-06 deg
tp 2458878.905892810822
(2020-Jan-30.40589281)		 3.6764e-05 TDB
period 1663.378635552394
4.55		 6.3259e-06
1.732e-08		 d
yr
n .2164269711691031 8.2308e-10 deg/d
Q 3.585975749141249 9.0918e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2145  
   data-arc span      56593 days (154.94 yr)  
   first obs. used      1866-02-08  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41674  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:42:50  

Additional Information
 Earth MOID = .958478 au 
 Jupiter MOID = 2.09638 au 
 T_jup = 3.207 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455237.5 (2010-Feb-10.0) TDB
Reference: JPL 96 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3033293327036345 4.5071e-08  
q 1.91427830101787 1.2516e-07 au
tp 2455544.578609892883
(2010-Dec-14.07860989)		 3.1452e-05 TDB
node 358.455632623468 1.2027e-05 deg
peri 46.90662598190267 1.4793e-05 deg
i 18.43500032717479 5.7966e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2145  
   data-arc span      56593 days (154.94 yr)  
   first obs. used      1866-02-08  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41674  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:42:50  

Additional Information
 Jupiter MOID = 2.09638 au 
 T_jup = 3.207 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.031413881945352E-15 -5.637162148602669E-15 -6.226246506446384E-13 -7.027434428748513E-16 -1.920802945719989E-13 -7.051501105808146E-15
q -5.637162148602669E-15 1.566544482345815E-14 1.775806029991016E-12 1.290000910265629E-15 5.447163331280724E-13 1.932391023293588E-14
tp -6.226246506446384E-13 1.775806029991016E-12 9.891985034393601E-10 -6.377060336542276E-12 2.800187745954061E-10 3.227845927928979E-12
node -7.027434428748513E-16 1.290000910265629E-15 -6.377060336542276E-12 1.446592667461813E-10 -1.380096333169304E-10 1.410727810485574E-11
peri -1.920802945719989E-13 5.447163331280724E-13 2.800187745954061E-10 -1.380096333169304E-10 2.188288499667311E-10 -1.278599524102611E-11
i -7.051501105808146E-15 1.932391023293588E-14 3.227845927928979E-12 1.410727810485574E-11 -1.278599524102611E-11 3.360105569699408E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.66   n/a E2021B10 IRAS observations used: 6
diameter diameter 132.842 km 29.191 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 9.93 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1980) Icarus 43, 20-32.]
[Schober, H.J.; Schroll, A. (1982) Astron. Astrophys. 107, 402-405.]
[Di Martino, M.; Zappala, V.; De Sanctis, G.; Cacciatori, S. (1987) Icarus 69, 338-353.]
[Brinsfield, J.W. (2007) Minor Planet Bull. 34, 58-59.]
[Warner, B.D. (2007) Minor Planet Bull. 34, 72-77.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2011) http://www.minorplanetobserver.com/PDO/PDOLightcurves.htm]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.029   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
B-V BV 0.713   0.019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=7.52, mean=11.27, max.=19.66) deg.
U-B UB 0.363   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=7.52, mean=11.27, max.=19.66) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

36 Atalante (A855 TA)          Discovered 1855-Oct-05 by Goldschmidt, H. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A855 TA = A901 SB = A912 HC 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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