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JPL Small-Body Database Browser
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91516 (1999 RD174)
Classification: Main-belt Asteroid          SPK-ID: 2091516
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0321327003451428 6.0724e-08  
a 2.770393838210087 1.9423e-08 au
q 2.681373603168852 1.6763e-07 au
i 6.538645452938439 6.3908e-06 deg
node 15.88478948946113 3.7835e-05 deg
peri 343.2738365222712 8.521e-05 deg
M 167.175150546582 7.778e-05 deg
tp 2458218.368246577789
(2018-Apr-09.86824658)
0.00036352 TDB
period 1684.266054562573
4.61
1.7712e-05
4.849e-08
d
yr
n .2137429529169588 2.2478e-09 deg/d
Q 2.859414073251321 2.0047e-08 au
  Orbit Determination Parameters
   # obs. used (total)      770  
   data-arc span      7453 days (20.41 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53822  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:32:21  

Additional Information
 Earth MOID = 1.67857 au 
 Jupiter MOID = 2.27162 au 
 T_jup = 3.327 
[ 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 15.0   n/a MPO468901  

91516 (1999 RD174)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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