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70181 (1999 RA1)
Classification: Main-belt Asteroid          SPK-ID: 2070181
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07318591099994413 3.5701e-08  
a 2.343480238988957 9.7501e-09 au
q 2.171970502788183 8.4885e-08 au
i 5.843302832077628 4.0238e-06 deg
node 305.8611042338885 3.802e-05 deg
peri 270.9151340107751 4.7021e-05 deg
M 44.85940974220588 2.8208e-05 deg
tp 2458837.216829489519
(2019-Dec-19.71682949)
0.0001026 TDB
period 1310.359225000417
3.59
8.1776e-06
2.239e-08
d
yr
n .2747338234672903 1.7145e-09 deg/d
Q 2.514989975189731 1.0464e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1105  
   data-arc span      8117 days (22.22 yr)  
   first obs. used      1998-03-22  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51364  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:34:25  

Additional Information
 Earth MOID = 1.17405 au 
 Jupiter MOID = 2.48612 au 
 T_jup = 3.552 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456664.5 (2014-Jan-07.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07351932609023781 3.5603e-08  
q 2.170472817107073 8.4729e-08 au
tp 2456217.130268797689
(2012-Oct-16.63026880)
0.0001022 TDB
node 305.9066995181026 3.8e-05 deg
peri 270.771347554884 4.6961e-05 deg
i 5.845843715462449 4.0249e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1105  
   data-arc span      8117 days (22.22 yr)  
   first obs. used      1998-03-22  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51364  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:34:25  

Additional Information
 Jupiter MOID = 2.48612 au 
 T_jup = 3.552 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.267566873267171E-15 -2.999223620931328E-15 -5.159122430330394E-13 2.449112102931485E-15 -1.218221301785971E-13 -5.031153133971943E-16
q -2.999223620931328E-15 7.17903071202721E-15 1.133496693552302E-12 -5.829655864808331E-15 2.719423654198169E-13 1.374680815201969E-15
tp -5.159122430330394E-13 1.133496693552302E-12 1.044441321759616E-8 1.182373224304436E-11 2.832084645210292E-9 5.844492301470437E-13
node 2.449112102931485E-15 -5.829655864808331E-15 1.182373224304436E-11 1.444007766291775E-9 -1.432900801902206E-9 1.572935128361314E-11
peri -1.218221301785971E-13 2.719423654198169E-13 2.832084645210292E-9 -1.432900801902206E-9 2.205297900297707E-9 -1.546703515114367E-11
i -5.031153133971943E-16 1.374680815201969E-15 5.844492301470437E-13 1.572935128361314E-11 -1.546703515114367E-11 1.619945055558635E-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 15.2   n/a MPO468640  
diameter diameter 2.648 km 0.962 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.210   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70181 (1999 RA1)          Discovered 1999-Sep-04 by CSS at Catalina
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RA1 = 1998 HM13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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