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180789 (2004 RU216)
Classification: Main-belt Asteroid          SPK-ID: 2180789
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2892080595127449 3.4175e-08  
a 3.085573593463754 2.3606e-08 au
q 2.193200842014335 1.0435e-07 au
i 11.74139369802573 4.5597e-06 deg
node 294.3122740469722 2.5204e-05 deg
peri 347.1216933031178 2.7294e-05 deg
M 54.92078931975454 9.8274e-06 deg
tp 2458898.479404102072
(2020-Feb-18.97940410)
5.4604e-05 TDB
period 1979.713253759552
5.42
2.2719e-05
6.22e-08
d
yr
n .1818445167836029 2.0868e-09 deg/d
Q 3.977946344913174 3.0433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1023  
   data-arc span      8212 days (22.48 yr)  
   first obs. used      1998-08-17  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44614  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:27:58  

Additional Information
 Earth MOID = 1.17653 au 
 Jupiter MOID = 1.22731 au 
 T_jup = 3.130 
[ 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 14.43   n/a E2021B55  
rotation period rot_per 19.4408 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

180789 (2004 RU216)          Discovered 2004-Sep-11 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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