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9163 (1987 RB1)
Classification: Main-belt Asteroid          SPK-ID: 2009163
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .203868674352215 3.6933e-08  
a 3.160680253071739 1.7368e-08 au
q 2.51631655982678 1.2136e-07 au
i 1.348037388111956 3.759e-06 deg
node 193.5658650805469 0.00016696 deg
peri 119.3437341155145 0.00016717 deg
M 307.1618973011259 8.6196e-06 deg
tp 2459301.740933972490
(2021-Mar-28.24093397)
5.0047e-05 TDB
period 2052.43433603469
5.62
1.6918e-05
4.632e-08
d
yr
n .1754014701856534 1.4458e-09 deg/d
Q 3.805043946316699 2.0909e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1489  
   data-arc span      11916 days (32.62 yr)  
   first obs. used      1987-09-13  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54936  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:07:58  

Additional Information
 Earth MOID = 1.50263 au 
 Jupiter MOID = 1.49454 au 
 T_jup = 3.172 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO435786  
diameter diameter 8.983 km 0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9163 (1987 RB1)          Discovered 1987-Sep-13 by Debehogne, H. at La Silla
Reference: 19980910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1987 RB1 = 1993 TE43 = 1996 DV4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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