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487699 (2015 RP21)
Classification: Main-belt Asteroid          SPK-ID: 2487699
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1727592758025698 1.2565e-07  
a 2.570482888824996 3.3064e-08 au
q 2.126408126488692 3.3861e-07 au
i 8.973064129087584 1.1291e-05 deg
node 180.2111512940927 3.8804e-05 deg
peri 177.1081290797993 4.6838e-05 deg
M 91.68910010335823 2.5589e-05 deg
tp 2458817.114474591591
(2019-Nov-29.61447459)
0.00010299 TDB
period 1505.291130477264
4.12
2.9044e-05
7.952e-08
d
yr
n .2391563948735015 4.6144e-09 deg/d
Q 3.0145576511613 3.8776e-08 au
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      4901 days (13.42 yr)  
   first obs. used      2006-05-23  
   last obs. used      2019-10-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63413  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 17:22:19  

Additional Information
 Earth MOID = 1.12088 au 
 Jupiter MOID = 2.43974 au 
 T_jup = 3.392 
[ 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 17.6   n/a MPO446846  

487699 (2015 RP21)          Discovered 2007-Sep-14 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2017-03-14

Alternate Designations
 2015 RP21 = 2011 SE250 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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