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JPL Small-Body Database Browser
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66646 (1999 RM237)
Classification: Main-belt Asteroid          SPK-ID: 2066646
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2045220401082053 6.0965e-08  
a 2.667374696006946 1.9798e-08 au
q 2.121837781446601 1.6538e-07 au
i 12.55675373911273 6.2383e-06 deg
node 144.447102971224 2.4454e-05 deg
peri 219.4521327721505 2.7243e-05 deg
M 270.7828880730974 1.7384e-05 deg
tp 2459394.839359728066
(2021-Jun-29.33935973)
7.98e-05 TDB
period 1591.19889039242
4.36
1.7716e-05
4.85e-08
d
yr
n .226244501660768 2.5189e-09 deg/d
Q 3.212911610567291 2.3848e-08 au
  Orbit Determination Parameters
   # obs. used (total)      561  
   data-arc span      7168 days (19.62 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5656  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:22:48  

Additional Information
 Earth MOID = 1.13329 au 
 Jupiter MOID = 2.27046 au 
 T_jup = 3.319 
[ 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 14.8   n/a MPO432218  
diameter diameter 7.029 km 0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66646 (1999 RM237)          Discovered 1999-Sep-08 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RM237 = 2001 DL35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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