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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1726589181581857 1.2588e-07  
a 2.569954514781425 3.4329e-08 au
q 2.126228948543519 3.3949e-07 au
i 8.973229177073945 1.1291e-05 deg
node 180.2179630092023 3.9662e-05 deg
peri 177.0476978598549 4.7491e-05 deg
M 43.91202548114376 2.549e-05 deg
tp 2458816.944436973097
(2019-Nov-29.44443697)
0.00010453 TDB
period 1504.827025527674
4.12
3.0152e-05
8.255e-08
d
yr
n .2392301532953693 4.7933e-09 deg/d
Q 3.013680081019331 4.0256e-08 au
  Orbit Determination Parameters
   # obs. used (total)      120  
   data-arc span      4840 days (13.25 yr)  
   first obs. used      2006-05-23  
   last obs. used      2019-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 08:19:36  

Additional Information
 Earth MOID = 1.12236 au 
 Jupiter MOID = 2.43969 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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