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2656 Evenkia (1979 HD5)
Classification: Main-belt Asteroid          SPK-ID: 2002656
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07953737899510048 3.5971e-08  
a 2.256296092703649 6.6619e-09 au
q 2.076836215253115 8.1253e-08 au
i 3.198698787123235 3.1295e-06 deg
node 95.94924661863621 6.8427e-05 deg
peri 75.63257809442551 7.1094e-05 deg
M 91.17801110374111 1.9349e-05 deg
tp 2458686.969223795617
(2019-Jul-22.46922380)
6.6402e-05 TDB
period 1237.919955340488
3.39
5.4826e-06
1.501e-08
d
yr
n .2908104021160096 1.288e-09 deg/d
Q 2.435755970154184 7.1918e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2399  
   data-arc span      23855 days (65.31 yr)  
   first obs. used      1955-02-23  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4353  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:48:08  

Additional Information
 Earth MOID = 1.08498 au 
 Jupiter MOID = 2.52894 au 
 T_jup = 3.617 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3   n/a MPO365277  
diameter diameter 6.086 km 0.202 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.0847 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Lang, K.; Jacobsen, J.; Kristensen, L.H.; Larsen, F.R. (2016) Minor Planet Bull. 43, 344-346.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Oey, J.; Groom, R. (2018) Minor Planet Bull. 45, 363-366.]
geometric albedo albedo 0.275   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2656 Evenkia (1979 HD5)          Discovered 1979-Apr-25 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1979 HD5 = 1955 DG = 1962 HB = 1982 DE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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