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5284 Orsilocus (1989 CK2)
Classification: Jupiter Trojan          SPK-ID: 2005284
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08393900194636462 2.6641e-08  
a 5.225082589533963 8.5383e-08 au
q 4.786494371881156 1.9162e-07 au
i 20.22424935370343 3.8134e-07 deg
node 102.7469553486295 3.4026e-06 deg
peri 343.0684738370181 2.2034e-05 deg
M 286.5638323259803 2.4629e-05 deg
tp 2460090.409145632342
(2023-May-25.90914563)
0.00031072 TDB
period 4362.527383642092
11.94
0.00010693
2.928e-07
d
yr
n .08252097198286261 2.0227e-09 deg/d
Q 5.663670807186771 9.255e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1890  
   data-arc span      24806 days (67.92 yr)  
   first obs. used      1953-02-15  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45655  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 17:32:37  

Additional Information
 Earth MOID = 3.80742 au 
 Jupiter MOID = .391676 au 
 T_jup = 2.870 
[ 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 10.19   n/a E2021B10  
diameter diameter 50.159 km 0.462 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 10.31 h n/a LCDB (Rev. 2020-October); 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:
[French, L.M.; Stephens, R.D.; Coley, D.R.; Wasserman, L.H.; et al. (2013) Minor Planet Bull. 40, 198-203.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 15-22.]
[Stephens, R.D.; Coley, D.R.; Warner, B.D.; French, L.M. (2016) Minor Planet Bull. 43, 323-331.]
geometric albedo albedo 0.070   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

5284 Orsilocus (1989 CK2)          Discovered 1989-Feb-01 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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