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JPL Small-Body Database Browser
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117213 (2004 RK214)
Classification: Main-belt Asteroid          SPK-ID: 2117213
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3145341373697402 7.3572e-08  
a 3.158683687914568 2.841e-08 au
q 2.16516983891249 2.4372e-07 au
i 12.1873299921986 4.6708e-06 deg
node 227.4280293635767 3.4547e-05 deg
peri 109.1479953804621 3.542e-05 deg
M 228.024622067657 8.8017e-06 deg
tp 2459352.206052199010
(2021-May-17.70605220)
5.7141e-05 TDB
period 2050.489894640603
5.61
2.7664e-05
7.574e-08
d
yr
n .1755678001344642 2.3687e-09 deg/d
Q 4.152197536916646 3.7346e-08 au
  Orbit Determination Parameters
   # obs. used (total)      419  
   data-arc span      15506 days (42.45 yr)  
   first obs. used      1976-10-24  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45041  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:03:05  

Additional Information
 Earth MOID = 1.19239 au 
 Jupiter MOID = 1.62694 au 
 T_jup = 3.093 
[ 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 14.9   n/a MPO436562  
diameter diameter 4.461 km 1.619 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 21.324 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.089   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

117213 (2004 RK214)          Discovered 2004-Sep-11 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2004 RK214 = 1976 UG19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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