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487698 (2015 RS18)
Classification: Main-belt Asteroid          SPK-ID: 2487698
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 .195145385056431 9.4011e-08  
a 2.651795609536542 5.6845e-08 au
q 2.13430993422258 2.742e-07 au
i 13.59235545607033 9.7265e-06 deg
node 184.6211023112104 2.295e-05 deg
peri 166.3456023329265 2.9586e-05 deg
M 31.78574332143184 1.9752e-05 deg
tp 2458861.236159062309
(2020-Jan-12.73615906)
8.3759e-05 TDB
period 1577.278914970814
4.32
5.0717e-05
1.389e-07
d
yr
n .2282411795295326 7.3391e-09 deg/d
Q 3.169281284850503 6.7939e-08 au
  Orbit Determination Parameters
   # obs. used (total)      144  
   data-arc span      2364 days (6.47 yr)  
   first obs. used      2011-10-25  
   last obs. used      2018-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59673  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-15 06:47:33  

Additional Information
 Earth MOID = 1.1318 au 
 Jupiter MOID = 2.29561 au 
 T_jup = 3.323 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457128.5 (2015-Apr-16.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1974412015525892 9.4232e-08  
q 2.127629134637055 2.7539e-07 au
tp 2457284.348249404187
(2015-Sep-18.84824940)
6.5372e-05 TDB
node 184.7044293137193 2.291e-05 deg
peri 166.3562607121183 2.9354e-05 deg
i 13.60839557322863 9.7375e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      144  
   data-arc span      2364 days (6.47 yr)  
   first obs. used      2011-10-25  
   last obs. used      2018-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59673  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-15 06:47:33  

Additional Information
 Jupiter MOID = 2.29561 au 
 T_jup = 3.323 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.879622578372983E-15 -2.567323384106734E-14 1.250220588576875E-12 3.050422318406049E-14 3.373394238318685E-13 -5.127702982708693E-14
q -2.567323384106734E-14 7.583791847992416E-14 -3.340133574301651E-12 -1.031916132637523E-13 -9.617263477496853E-13 1.550159931090816E-13
tp 1.250220588576875E-12 -3.340133574301651E-12 4.273508188092266E-9 1.640022031751304E-12 1.213621333374948E-9 -1.690224988855596E-11
node 3.050422318406049E-14 -1.031916132637523E-13 1.640022031751304E-12 5.248580471971721E-10 -5.06685460284823E-10 2.328693775357809E-11
peri 3.373394238318685E-13 -9.617263477496853E-13 1.213621333374948E-9 -5.06685460284823E-10 8.616548692428515E-10 -2.756076145206505E-11
i -5.127702982708693E-14 1.550159931090816E-13 -1.690224988855596E-11 2.328693775357809E-11 -2.756076145206505E-11 9.481856024973456E-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 17.2   n/a MPO440946  

487698 (2015 RS18)          Discovered 2011-Oct-25 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2017-03-14

Alternate Designations
 2015 RS18 = 2014 HQ199 = 2014 HW112 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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