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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2304686635699257 5.2479e-08  
a 2.215789189440901 9.4969e-09 au
q 1.705119216197768 1.1643e-07 au
i 5.841503562163108 5.928e-06 deg
node 285.0793358542695 5.3237e-05 deg
peri 58.80188931031802 5.4843e-05 deg
M 84.4301430140239 1.682e-05 deg
tp 2457117.955986624895
(2015-Apr-05.45598663)
5.5178e-05 JED
period 1204.733773791463
3.30
7.7452e-06
2.121e-08
d
yr
n .2988212066696116 1.9211e-09 deg/d
Q 2.726459162684034 1.1686e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1092  
   data-arc span      26766 days (73.28 yr)  
   first obs. used      1942-09-07  
   last obs. used      2015-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51844  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:58:20  

Additional Information
 Earth MOID = .704014 au 
 Jupiter MOID = 2.69066 au 
 T_jup = 3.612 
[ 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. 2015-December); 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. (2015) 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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