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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03249787705871195 5.4143e-08  
a 2.769557359821021 1.7911e-08 au
q 2.679552625234506 1.5023e-07 au
i 6.539589806563614 5.7627e-06 deg
node 15.88436768180213 3.5877e-05 deg
peri 343.311205339974 7.9611e-05 deg
M 251.8171286227283 7.2894e-05 deg
tp 2459902.406170636544
(2022-Nov-18.90617064)
0.0003416 TDB
period 1683.503304270947
4.61
1.6331e-05
4.471e-08
d
yr
n .2138397941285305 2.0744e-09 deg/d
Q 2.859562094407535 1.8493e-08 au
  Orbit Determination Parameters
   # obs. used (total)      891  
   data-arc span      7967 days (21.81 yr)  
   first obs. used      1999-09-07  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53723  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:17:39  

Additional Information
 Earth MOID = 1.67593 au 
 Jupiter MOID = 2.27134 au 
 T_jup = 3.328 
[ 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 15.00   n/a MPO637244  

91516 (1999 RD174)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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