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21567 (1998 RB2)
Classification: Main-belt Asteroid          SPK-ID: 2021567
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2117063569873586 2.6993e-08  
a 2.538985624713217 9.1187e-09 au
q 2.00146622766191 6.9055e-08 au
i 6.992360108212857 4.3218e-06 deg
node 130.9036335838786 2.4757e-05 deg
peri 88.00023408253972 2.7853e-05 deg
M 285.4061406974324 1.4789e-05 deg
tp 2459506.688846128117
(2021-Oct-19.18884613)
6.1529e-05 TDB
period 1477.708562564319
4.05
7.9607e-06
2.18e-08
d
yr
n .243620433094926 1.3124e-09 deg/d
Q 3.076505021764525 1.1049e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1594  
   data-arc span      14534 days (39.79 yr)  
   first obs. used      1981-04-07  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52346  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:53:18  

Additional Information
 Earth MOID = 1.00776 au 
 Jupiter MOID = 1.93468 au 
 T_jup = 3.405 
[ 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 14.6   n/a MPO502327  
diameter diameter 2.635 km 0.320 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.485   0.180 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21567 (1998 RB2)          Discovered 1998-Sep-01 by Zoltowski, F. B. at Woomera
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 RB2 = 1981 GL1 = 1999 XR152 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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