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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07995723674792696 3.508e-08  
a 2.256175034323255 6.7251e-09 au
q 2.075777512959108 7.9446e-08 au
i 3.198069390034974 3.1256e-06 deg
node 95.94375086997726 6.6624e-05 deg
peri 75.77616457592424 6.9308e-05 deg
M 149.1513128972495 1.9177e-05 deg
tp 2458687.659646909101
(2019-Jul-23.15964691)
6.5729e-05 TDB
period 1237.820328406431
3.39
5.5345e-06
1.515e-08
d
yr
n .290833808217921 1.3004e-09 deg/d
Q 2.436572555687401 7.2629e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2471  
   data-arc span      24037 days (65.81 yr)  
   first obs. used      1955-02-23  
   last obs. used      2020-12-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43186  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:04:48  

Additional Information
 Earth MOID = 1.08349 au 
 Jupiter MOID = 2.52703 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 13.39   n/a E2021B10  
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. 2020-October); 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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