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64 Angelina (A861 EA)
Classification: Main-belt Asteroid          SPK-ID: 2000064
[ 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 115 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1252171336147822 3.2924e-08  
a 2.683409425103271 6.3539e-09 au
q 2.347400588576948 8.7882e-08 au
i 1.309846447471194 3.4601e-06 deg
node 309.097173436612 0.00019861 deg
peri 179.2244428070223 0.00019944 deg
M 128.0718474205485 1.9229e-05 deg
tp 2458429.310767991927
(2018-Nov-06.81076799)		 8.5287e-05 TDB
period 1605.568496624297
4.40		 5.7026e-06
1.561e-08		 d
yr
n .2242196460362164 7.9638e-10 deg/d
Q 3.019418261629593 7.1495e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2803  
   data-arc span      58123 days (159.13 yr)  
   first obs. used      1861-03-08  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49943  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 00:57:43  

Additional Information
 Earth MOID = 1.36242 au 
 Jupiter MOID = 2.02842 au 
 T_jup = 3.364 
[ 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 8.0   n/a MPO473761  
magnitude slope G 0.48   n/a PDS3 (MPC 17257) Fit
diameter diameter 58.292 km 1.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.752 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Poutanen, M. (1983) in Asteroids, Comets, Meteors. C.-I. Lagerkvist, H. Rickman, eds. Uppsala, pp. 45-48.]
[Harris, A.W.; Young, J.W.; Contreiras, L.; Dockweiler, T.; et al. (1989) Icarus 81, 365-374.]
[Michalowski, T. (1993) Icarus 106, 563-572.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Rosenbush, V.K.; Kiselev, N.N.; Shevchenko, V.G.; Jockers, K.; et al. (2005) Icarus 178, 222-234.]
[Durech, J. (2006) IAU 2006, poster paper.]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Warner, B.D. (2014) Minor Planet Bull. 41, 102-112.]
[Behrend, R. (2015) 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 0.483   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.734   0.037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=4.80, mean=9.35, max.=16.41) deg.
U-B UB 0.254   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=4.80, mean=9.35, max.=16.41) deg.
Tholen spectral type spec_T E   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Xe   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)

64 Angelina (A861 EA)          Discovered 1861-Mar-04 by Tempel, E. W. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A861 EA = 1930 QY 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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