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4862 Loke (1987 SJ5)
Classification: Main-belt Asteroid          SPK-ID: 2004862
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2386461569225435 2.7252e-08  
a 2.914591472192732 1.2722e-08 au
q 2.219035418354718 8.1369e-08 au
i 8.651938087647514 4.1789e-06 deg
node 199.7222358299281 2.0187e-05 deg
peri 100.934674635662 2.2167e-05 deg
M 290.5656373671876 9.943e-06 deg
tp 2459551.039460711897
(2021-Dec-02.53946071)
5.1049e-05 TDB
period 1817.460419758324
4.98
1.1899e-05
3.258e-08
d
yr
n .1980785914709883 1.2969e-09 deg/d
Q 3.610147526030746 1.5757e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2270  
   data-arc span      16423 days (44.96 yr)  
   first obs. used      1976-04-02  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45957  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:54:14  

Additional Information
 Earth MOID = 1.22196 au 
 Jupiter MOID = 1.75871 au 
 T_jup = 3.222 
[ 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 13.00   n/a E2021B10  
diameter diameter 6.610 km 0.297 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.336   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4862 Loke (1987 SJ5)          Discovered 1987-Sep-30 by Jensen, P. at Brorfelde
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1987 SJ5 = 1976 GW3 = 1981 JZ1 = 1982 SN6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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