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JPL Small-Body Database Browser
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91495 (1999 RZ138)
Classification: Main-belt Asteroid          SPK-ID: 2091495
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2624737763663052 4.0222e-08  
a 2.731332023151913 1.3674e-08 au
q 2.01442899252501 1.1059e-07 au
i 9.52991888284023 4.8031e-06 deg
node 211.261572076182 3.0412e-05 deg
peri 164.4432701617208 3.1739e-05 deg
M 188.9737005173943 1.015e-05 deg
tp 2459783.786370850774
(2022-Jul-23.28637085)
4.9416e-05 TDB
period 1648.770360812009
4.51
1.2381e-05
3.39e-08
d
yr
n .2183445363626637 1.6396e-09 deg/d
Q 3.448235053778816 1.7263e-08 au
  Orbit Determination Parameters
   # obs. used (total)      838  
   data-arc span      10390 days (28.45 yr)  
   first obs. used      1990-09-22  
   last obs. used      2019-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5068  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:29:28  

Additional Information
 Earth MOID = 1.01809 au 
 Jupiter MOID = 2.02943 au 
 T_jup = 3.284 
[ 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 14.7   n/a MPO280380  

91495 (1999 RZ138)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RZ138 = 1990 TN5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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