Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08421366126274898 2.662e-08  
a 5.225185598907859 8.5052e-08 au
q 4.785153588846438 1.9159e-07 au
i 20.22423917990835 3.8131e-07 deg
node 102.7460632044386 3.4025e-06 deg
peri 343.140652136285 2.1966e-05 deg
M 302.6995510499841 2.4757e-05 deg
tp 2460090.894916195572
(2023-May-26.39491620)
0.00030959 TDB
period 4362.656391199821
11.94
0.00010652
2.916e-07
d
yr
n .08251853176568703 2.0148e-09 deg/d
Q 5.665217608969281 9.2214e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1900  
   data-arc span      24965 days (68.35 yr)  
   first obs. used      1953-02-15  
   last obs. used      2021-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45644  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 13:38:04  

Additional Information
 Earth MOID = 3.80638 au 
 Jupiter MOID = .392214 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-03 15:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin