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5017 Tenchi (1977 DS2)
Classification: Main-belt Asteroid          SPK-ID: 2005017
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07801342473727385 3.6524e-08  
a 3.150334205232184 1.8835e-08 au
q 2.904565844815044 1.1922e-07 au
i 16.13815723825151 3.8501e-06 deg
node 140.9068817461778 1.3907e-05 deg
peri 251.7980514358051 2.8171e-05 deg
M 16.04227884153978 2.3233e-05 deg
tp 2458909.488362175983
(2020-Feb-29.98836218)
0.00013193 TDB
period 2042.365049272591
5.59
1.8316e-05
5.015e-08
d
yr
n .176266236111031 1.5808e-09 deg/d
Q 3.396102565649325 2.0305e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2170  
   data-arc span      15714 days (43.02 yr)  
   first obs. used      1977-02-18  
   last obs. used      2020-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47458  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:15:23  

Additional Information
 Earth MOID = 1.9541 au 
 Jupiter MOID = 1.98639 au 
 T_jup = 3.142 
[ 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 12.3   n/a MPO502201  
diameter diameter 22.488 km 0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.298 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.049   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5017 Tenchi (1977 DS2)          Discovered 1977-Feb-18 by Kosai and Hurukawa at Kiso
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1977 DS2 = 1988 BV3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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