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78505 (2002 RS84)
Classification: Main-belt Asteroid          SPK-ID: 2078505
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1528946236996149 3.1609e-08  
a 3.162009254583141 2.1275e-08 au
q 2.678555039468952 1.0617e-07 au
i 9.321095117162068 5.31e-06 deg
node 183.5168459395341 2.2445e-05 deg
peri 276.8962721547121 2.921e-05 deg
M 330.864416139901 1.8487e-05 deg
tp 2459166.712758296777
(2020-Nov-13.21275830)
0.00010608 TDB
period 2053.72898220123
5.62
2.0727e-05
5.675e-08
d
yr
n .1752908991984641 1.7691e-09 deg/d
Q 3.64546346969733 2.4528e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1204  
   data-arc span      7888 days (21.60 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51152  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:36  

Additional Information
 Earth MOID = 1.71549 au 
 Jupiter MOID = 1.6317 au 
 T_jup = 3.166 
[ 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 13.9   n/a MPO324993  
diameter diameter 5.521 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 28.0544 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.192   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78505 (2002 RS84)          Discovered 2002-Sep-05 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 RS84 = 1999 FP50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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