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21732 Rumery (1999 RW142)
Classification: Main-belt Asteroid          SPK-ID: 2021732
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1159865401461677 3.8899e-08  
a 2.678840061741949 1.2506e-08 au
q 2.368130671375554 1.0279e-07 au
i 4.825804051097396 5.4824e-06 deg
node 359.2436586429163 4.7966e-05 deg
peri 82.56114925671611 5.32e-05 deg
M 239.0808650095988 2.4011e-05 deg
tp 2459738.411879492269
(2022-Jun-07.91187949)
0.00010798 TDB
period 1601.469251600161
4.38
1.1215e-05
3.07e-08
d
yr
n .2247935760491774 1.5742e-09 deg/d
Q 2.989549452108343 1.3957e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1242  
   data-arc span      8972 days (24.56 yr)  
   first obs. used      1995-11-24  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53361  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:55:16  

Additional Information
 Earth MOID = 1.38944 au 
 Jupiter MOID = 2.2223 au 
 T_jup = 3.363 
[ 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 14.47   n/a E2021B10  
diameter diameter 3.873 km 0.680 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.224   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21732 Rumery           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Rhett Lee Rumery (b. 1986) was awarded second place in the 2005 Intel International Science and Engineering Fair for his engineering team project. He attends the Chillicothe High School, Chillicothe, Missouri, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050822/MPCPages.arcLast Updated: 2005-08-26

[ show close-approach data ]
Alternate Designations
 1999 RW142 = 1997 GF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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