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JPL Small-Body Database Browser
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904 Rockefellia (A918 UC)
Classification: Main-belt Asteroid          SPK-ID: 2000904
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08794138512132359 3.2174e-08  
a 2.992978137935991 1.2205e-08 au
q 2.72977149484806 9.4487e-08 au
i 15.16040078626412 4.7003e-06 deg
node 198.1339163050071 1.3166e-05 deg
peri 251.29674349 2.9437e-05 deg
M 102.33438757881 2.6367e-05 deg
tp 2458062.883192216753
(2017-Nov-05.38319222)
0.00013799 TDB
period 1891.270914705166
5.18
1.1568e-05
3.167e-08
d
yr
n .1903481924249446 1.1643e-09 deg/d
Q 3.256184781023921 1.3278e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2576  
   data-arc span      38641 days (105.79 yr)  
   first obs. used      1913-10-31  
   last obs. used      2019-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46916  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:13:16  

Additional Information
 Earth MOID = 1.78859 au 
 Jupiter MOID = 2.03299 au 
 T_jup = 3.197 
[ 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 10.4   n/a MPO347521  
diameter diameter 49.146 km 0.763 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 6.826 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:
[Polakis, T. (2018) Minor Planet Bull. 45, 199-203.]
geometric albedo albedo 0.055   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

904 Rockefellia (A918 UC)          Discovered 1918-Oct-29 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A918 UC = 1949 UK = 1961 AK = A913 UD = A916 KC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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