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175809 (1999 RU182)
Classification: Main-belt Asteroid          SPK-ID: 2175809
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1470187286788812 6.2597e-08  
a 2.290758917288959 6.7088e-09 au
q 1.953974453559326 1.4153e-07 au
i 7.032761784333469 4.5387e-06 deg
node 346.4752896123733 3.84e-05 deg
peri 22.50870311656923 4.1382e-05 deg
M 36.40752641371567 1.3629e-05 deg
tp 2459072.427414186950
(2020-Aug-10.92741419)
4.7874e-05 TDB
period 1266.390096618284
3.47
5.5632e-06
1.523e-08
d
yr
n .2842725957517586 1.2488e-09 deg/d
Q 2.627543381018592 7.6951e-09 au
  Orbit Determination Parameters
   # obs. used (total)      554  
   data-arc span      10338 days (28.30 yr)  
   first obs. used      1992-09-22  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51916  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:33:50  

Additional Information
 Earth MOID = .952961 au 
 Jupiter MOID = 2.83939 au 
 T_jup = 3.574 
[ 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 16.8   n/a MPO280931  
rotation period rot_per 202.127 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

175809 (1999 RU182)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

Alternate Designations
 1999 RU182 = 1992 SJ19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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