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21759 (1999 RG197)
Classification: Main-belt Asteroid          SPK-ID: 2021759
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09509188845989551 3.2339e-08  
a 2.463275207890456 8.7795e-09 au
q 2.229037716575711 8.0277e-08 au
i 12.30101747319032 4.1452e-06 deg
node 198.3716717917666 1.5794e-05 deg
peri 137.0124953797379 2.9518e-05 deg
M 245.4402733388996 2.7875e-05 deg
tp 2459845.862987905160
(2022-Sep-23.36298791)
0.00011065 TDB
period 1412.107730707322
3.87
7.5494e-06
2.067e-08
d
yr
n .2549380561918436 1.363e-09 deg/d
Q 2.697512699205201 9.6143e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1384  
   data-arc span      9920 days (27.16 yr)  
   first obs. used      1994-04-06  
   last obs. used      2021-06-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53431  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:36:35  

Additional Information
 Earth MOID = 1.23647 au 
 Jupiter MOID = 2.63513 au 
 T_jup = 3.451 
[ 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 15.00   n/a MPO636390  

21759 (1999 RG197)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RG197 = 1998 HU75 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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