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487772 (2015 RL208)
Classification: Main-belt Asteroid          SPK-ID: 2487772
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02249478530484278 6.4028e-08  
a 2.714897544667165 3.6392e-08 au
q 2.653826507275232 1.7175e-07 au
i 1.670985646863339 7.8906e-06 deg
node 72.78670938089856 0.00023686 deg
peri 65.65507489221073 0.00031378 deg
M 300.8009814564127 0.00020664 deg
tp 2459469.183254310351
(2021-Sep-11.68325431)
0.00093962 TDB
period 1633.911742650071
4.47
3.2853e-05
8.995e-08
d
yr
n .2203301381604061 4.4301e-09 deg/d
Q 2.775968582059097 3.7211e-08 au
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      6112 days (16.73 yr)  
   first obs. used      2004-03-23  
   last obs. used      2020-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66956  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 18:33:02  

Additional Information
 Earth MOID = 1.66685 au 
 Jupiter MOID = 2.19922 au 
 T_jup = 3.360 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457366.5 (2015-Dec-10.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02047375550155506 6.44e-08  
q 2.659396516320391 1.7213e-07 au
tp 2457838.330531103176
(2017-Mar-25.83053110)
0.001021 TDB
node 72.78513016391099 0.00023685 deg
peri 66.37687624562221 0.00032729 deg
i 1.671910002594662 7.8882e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      6112 days (16.73 yr)  
   first obs. used      2004-03-23  
   last obs. used      2020-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66956  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 18:33:02  

Additional Information
 Jupiter MOID = 2.19922 au 
 T_jup = 3.360 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.147303567930922E-15 -1.084975303322945E-14 1.327407836865646E-11 2.870578771843844E-14 3.060143620488355E-12 -2.311454362117649E-16
q -1.084975303322945E-14 2.962952865502762E-14 -2.548562050425255E-11 -7.248551344846856E-14 -6.032301759095158E-12 1.398991175693385E-15
tp 1.327407836865646E-11 -2.548562050425255E-11 1.042458583542425E-6 4.985897955373922E-10 2.306590261962428E-7 2.384488548626027E-11
node 2.870578771843844E-14 -7.248551344846856E-14 4.985897955373922E-10 5.609654821558189E-8 -5.596027271961452E-8 -4.254348604648932E-10
peri 3.060143620488355E-12 -6.032301759095158E-12 2.306590261962428E-7 -5.596027271961452E-8 1.071170241907243E-7 4.304886327516406E-10
i -2.311454362117649E-16 1.398991175693385E-15 2.384488548626027E-11 -4.254348604648932E-10 4.304886327516406E-10 6.222294554627013E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.5   n/a MPO450510  

487772 (2015 RL208)          Discovered 2011-Oct-26 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2017-03-14

Alternate Designations
 2015 RL208 = 2011 WU38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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