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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2043284163240473 5.3944e-08  
a 2.668572226844149 1.7606e-08 au
q 2.123307089886747 1.5055e-07 au
i 12.55987651781869 4.6265e-06 deg
node 144.4309243608353 2.1775e-05 deg
peri 219.3109533542645 2.4779e-05 deg
M 316.1415857270865 1.7068e-05 deg
tp 2459394.484618136600
(2021-Jun-28.98461814)
7.6784e-05 TDB
period 1592.270575370641
4.36
1.5758e-05
4.314e-08
d
yr
n .2260922267662963 2.2375e-09 deg/d
Q 3.21383736380155 2.1203e-08 au
  Orbit Determination Parameters
   # obs. used (total)      693  
   data-arc span      7672 days (21.00 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-09-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55065  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:23:59  

Additional Information
 Earth MOID = 1.13297 au 
 Jupiter MOID = 2.26976 au 
 T_jup = 3.318 
[ 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 14.91   n/a E2021B10  
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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