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22282 (1985 RA)
Classification: Main-belt Asteroid          SPK-ID: 2022282
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1739714808214375 1.746e-08  
a 2.735157246530199 1.1271e-08 au
q 2.259317890071854 5.1447e-08 au
i 7.741866460517017 1.2125e-06 deg
node 275.9463033569841 9.9327e-06 deg
peri 110.6600153077295 1.1753e-05 deg
M 268.9374387574094 7.887e-06 deg
tp 2459618.435475030146
(2022-Feb-07.93547503)
3.7591e-05 TDB
period 1652.235221124913
4.52
1.0212e-05
2.796e-08
d
yr
n .217886651608175 1.3468e-09 deg/d
Q 3.210996602988542 1.3231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1729  
   data-arc span      12764 days (34.95 yr)  
   first obs. used      1985-09-11  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45947  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:03:10  

Additional Information
 Earth MOID = 1.27702 au 
 Jupiter MOID = 2.29724 au 
 T_jup = 3.317 
[ 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 13.4   n/a MPO474059  
diameter diameter 5.892 km 0.303 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 272.847 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.267   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22282 (1985 RA)          Discovered 1985-Sep-11 by Copenhagen Observatory at Brorfelde
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1985 RA = 1999 XM105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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