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91173 (1998 RN7)
Classification: Main-belt Asteroid          SPK-ID: 2091173
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09909193212220262 8.4295e-08  
a 3.045756422098233 2.7673e-08 au
q 2.743946533458912 2.7033e-07 au
i 9.682697149853094 9.1953e-06 deg
node 343.4530697930313 2.395e-05 deg
peri 20.99496636635646 4.0239e-05 deg
M 13.16944363572767 3.201e-05 deg
tp 2458929.475839859621
(2020-Mar-20.97583986)
0.00017229 TDB
period 1941.516920363323
5.32
2.646e-05
7.244e-08
d
yr
n .185422025543116 2.527e-09 deg/d
Q 3.347566310737554 3.0415e-08 au
  Orbit Determination Parameters
   # obs. used (total)      439  
   data-arc span      8899 days (24.36 yr)  
   first obs. used      1996-03-20  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57363  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:15:55  

Additional Information
 Earth MOID = 1.74338 au 
 Jupiter MOID = 2.10269 au 
 T_jup = 3.209 
[ 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 14.8   n/a MPO453351  
diameter diameter 3.260 km 0.790 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.182   0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91173 (1998 RN7)          Discovered 1998-Sep-12 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1998 RN7 = 1999 XS199 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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