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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07318591192471104 3.5619e-08  
a 2.343480238714604 9.7326e-09 au
q 2.171970500366736 8.4657e-08 au
i 5.843302861040245 4.0229e-06 deg
node 305.8611049209385 3.7966e-05 deg
peri 270.9151330100979 4.697e-05 deg
M 44.85941022177451 2.8179e-05 deg
tp 2458837.216827772617
(2019-Dec-19.71682777)
0.00010249 TDB
period 1310.35922477031
3.59
8.163e-06
2.235e-08
d
yr
n .2747338235155353 1.7115e-09 deg/d
Q 2.514989977062472 1.0445e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1109  
   data-arc span      8176 days (22.38 yr)  
   first obs. used      1998-03-22  
   last obs. used      2020-08-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51301  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:01:46  

Additional Information
 Earth MOID = 1.17405 au 
 Jupiter MOID = 2.48612 au 
 T_jup = 3.552 
[ 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 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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