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52264 (1985 RD2)
Classification: Main-belt Asteroid          SPK-ID: 2052264
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2265985311096201 1.941e-08  
a 2.445954332829107 9.8702e-09 au
q 1.891704673848821 4.964e-08 au
i 10.70509918597273 4.6083e-07 deg
node 343.3273535609662 6.0567e-06 deg
peri 347.0404694735535 8.7738e-06 deg
M 86.18083034026361 6.817e-06 deg
tp 2458866.013097580284
(2020-Jan-17.51309758)
2.5325e-05 TDB
period 1397.239785178073
3.83
8.4574e-06
2.316e-08
d
yr
n .2576508368992079 1.5595e-09 deg/d
Q 3.000203991809393 1.2107e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2248  
   data-arc span      12993 days (35.57 yr)  
   first obs. used      1985-08-13  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46638  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:43:53  

Additional Information
 Earth MOID = .881087 au 
 Jupiter MOID = 2.37856 au 
 T_jup = 3.440 
[ 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 13.99   n/a E2021B10  
diameter diameter 6.378 km 0.132 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.67955 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 0.144   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52264 (1985 RD2)          Discovered 1985-Sep-13 by Helin, E. F. at Palomar
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1985 RD2 = 1989 TV17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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