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4553 Doncampbell (1982 RH)
Classification: Main-belt Asteroid          SPK-ID: 2004553
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1410137546787916 3.4806e-08  
a 2.617722268034917 1.0932e-08 au
q 2.248587422313031 9.3867e-08 au
i 12.91613301217869 5.2218e-06 deg
node 168.6003842312255 1.8242e-05 deg
peri 115.0930149828235 2.7399e-05 deg
M 18.40216052686501 2.0616e-05 deg
tp 2458921.423016890615
(2020-Mar-12.92301689)
8.8477e-05 TDB
period 1546.976719272671
4.24
9.6906e-06
2.653e-08
d
yr
n .2327119700736403 1.4578e-09 deg/d
Q 2.986857113756802 1.2473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2136  
   data-arc span      25298 days (69.26 yr)  
   first obs. used      1951-03-13  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41559  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:10:42  

Additional Information
 Earth MOID = 1.26746 au 
 Jupiter MOID = 2.29485 au 
 T_jup = 3.357 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4   n/a MPO384794  
diameter diameter 8.996 km 0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 13.021 h n/a LCDB (Rev. 2019-August); 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 0.166   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4553 Doncampbell (1982 RH)          Discovered 1982-Sep-15 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1982 RH = 1951 EJ = 1981 ET49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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