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21760 (1999 RM199)
Classification: Main-belt Asteroid          SPK-ID: 2021760
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2654771480511249 2.2878e-08  
a 2.395521394273297 9.0387e-09 au
q 1.759565206426168 5.5206e-08 au
i 10.81982620831945 5.2892e-07 deg
node 339.6310862509833 5.6111e-06 deg
peri 359.6462985380588 6.7418e-06 deg
M 329.6385652922445 6.2885e-06 deg
tp 2459510.713725241878
(2021-Oct-23.21372524)
2.4128e-05 TDB
period 1354.248950448095
3.71
7.6647e-06
2.098e-08
d
yr
n .2658300011093846 1.5045e-09 deg/d
Q 3.031477582120426 1.1438e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1506  
   data-arc span      17431 days (47.72 yr)  
   first obs. used      1973-10-01  
   last obs. used      2021-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46747  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:10:52  

Additional Information
 Earth MOID = .750056 au 
 Jupiter MOID = 2.37139 au 
 T_jup = 3.457 
[ 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 14.13   n/a E2021B10  
diameter diameter 9.121 km 0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.039   0.000 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21760 (1999 RM199)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RM199 = 1973 TK = 1988 VA8 = 1998 FK108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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