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20001 (1991 CM)
Classification: Main-belt Asteroid          SPK-ID: 2020001
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1237223963791126 3.6353e-08  
a 3.115505854380835 1.7681e-08 au
q 2.730048004143683 1.1599e-07 au
i 17.02448255341601 3.8584e-06 deg
node 127.2540998009113 1.4996e-05 deg
peri 119.3447077060681 2.3044e-05 deg
M 61.18728941246486 1.6766e-05 deg
tp 2458859.110626929941
(2020-Jan-10.61062693)
9.3175e-05 TDB
period 2008.589945482768
5.50
1.7099e-05
4.681e-08
d
yr
n .1792302111287694 1.5258e-09 deg/d
Q 3.500963704617986 1.9869e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2106  
   data-arc span      10908 days (29.86 yr)  
   first obs. used      1991-01-17  
   last obs. used      2020-11-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42644  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:11:10  

Additional Information
 Earth MOID = 1.7585 au 
 Jupiter MOID = 1.83363 au 
 T_jup = 3.139 
[ 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 12.44   n/a E2021B10  
diameter diameter 22.717 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.035   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20001 (1991 CM)          Discovered 1991-Feb-05 by Arai, M., Mori, H. at Yorii
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 CM = 1998 MX28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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