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JPL Small-Body Database Browser
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193929 (2001 RF21)
Classification: Main-belt Asteroid          SPK-ID: 2193929
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1590609084388267 5.3223e-08  
a 2.247839565475707 1.1453e-08 au
q 1.890296162166403 1.1996e-07 au
i 3.915196239082995 6.6974e-06 deg
node 359.203699737485 7.208e-05 deg
peri 36.73273153495684 7.4779e-05 deg
M 41.97327840894284 1.7922e-05 deg
tp 2458456.978559418484
(2018-Dec-04.47855942)
6.1326e-05 TDB
period 1230.966952496556
3.37
9.4078e-06
2.576e-08
d
yr
n .2924530177433883 2.2351e-09 deg/d
Q 2.60538296878501 1.3275e-08 au
  Orbit Determination Parameters
   # obs. used (total)      266  
   data-arc span      7322 days (20.05 yr)  
   first obs. used      1998-12-17  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5707  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:42:07  

Additional Information
 Earth MOID = .897925 au 
 Jupiter MOID = 2.81932 au 
 T_jup = 3.610 
[ 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 17.2   n/a MPO454348  

193929 (2001 RF21)          Discovered 2001-Sep-07 by LINEAR at Socorro
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

[ show close-approach data ]
Alternate Designations
 2001 RF21 = 2001 QR207 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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