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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2653437166012672 2.4728e-08  
a 2.394943191431978 9.7994e-09 au
q 1.759460063968517 5.8587e-08 au
i 10.81971086408574 5.2923e-07 deg
node 339.6330235993539 5.6171e-06 deg
peri 359.6804294676577 6.8743e-06 deg
M 277.4816400243716 6.9002e-06 deg
tp 2459510.805403694976
(2021-Oct-23.30540369)
2.741e-05 TDB
period 1353.758670957403
3.71
8.3088e-06
2.275e-08
d
yr
n .2659262745444883 1.6321e-09 deg/d
Q 3.030426318895439 1.24e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1405  
   data-arc span      17036 days (46.64 yr)  
   first obs. used      1973-10-01  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47533  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 03:04:03  

Additional Information
 Earth MOID = .748902 au 
 Jupiter MOID = 2.37254 au 
 T_jup = 3.458 
[ 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 14.13   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

[ show close-approach data ]
Alternate Designations
 1999 RM199 = 1973 TK = 1988 VA8 = 1998 FK108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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