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5985 (1942 RJ)
Classification: Main-belt Asteroid          SPK-ID: 2005985
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .230282004527112 5.0557e-08  
a 2.216161709518816 9.1406e-09 au
q 1.705819548694592 1.1163e-07 au
i 5.840393811584808 5.9193e-06 deg
node 285.0749579592664 5.0299e-05 deg
peri 58.8348535106451 5.2008e-05 deg
M 144.1674750750568 1.687e-05 deg
tp 2457117.924367165243
(2015-Apr-05.42436717)
5.4645e-05 JED
period 1205.037597627804
3.30
7.4553e-06
2.041e-08
d
yr
n .2987458654474217 1.8483e-09 deg/d
Q 2.72650387034304 1.1246e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1175  
   data-arc span      26876 days (73.58 yr)  
   first obs. used      1942-09-07  
   last obs. used      2016-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50383  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:54:10  

Additional Information
 Earth MOID = .705851 au 
 Jupiter MOID = 2.6914 au 
 T_jup = 3.611 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a MPO302101  
rotation period rot_per 9.7212 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm]
[Chirony, V.; Galad, A.; Pravec, P. Kusnirak, P.; et al. (2011) Planet. Space Sci. 59, 1482-1489.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

5985 (1942 RJ)          Discovered 1942-Sep-07 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1942 RJ = 1965 OK = 1985 TS3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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