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21681 (1999 RN32)
Classification: Main-belt Asteroid          SPK-ID: 2021681
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 .09618794760855798 5.558e-08  
a 3.173059290496787 2.0252e-08 au
q 2.867849229703634 1.8532e-07 au
i 9.263071382200756 5.0492e-06 deg
node 177.3401138575484 2.7087e-05 deg
peri 200.4664521210985 3.4886e-05 deg
M 298.2149547608095 2.5135e-05 deg
tp 2459750.820741340586
(2022-Jun-20.32074134)
0.00014582 TDB
period 2064.503900398571
5.65
1.9765e-05
5.411e-08
d
yr
n .1743760328718675 1.6694e-09 deg/d
Q 3.47826935128994 2.22e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1475  
   data-arc span      10248 days (28.06 yr)  
   first obs. used      1993-06-16  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54222  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:14:27  

Additional Information
 Earth MOID = 1.87012 au 
 Jupiter MOID = 1.99005 au 
 T_jup = 3.174 
[ 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 13.47   n/a E2021B10  
diameter diameter 8.480 km 0.371 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.118   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21681 (1999 RN32)          Discovered 1999-Sep-09 by Korlevic, K. at Visnjan
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RN32 = 1994 WP2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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