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22712 (1998 RF78)
Classification: Main-belt Asteroid          SPK-ID: 2022712
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01237601974945116 3.9582e-08  
a 3.138896483310168 1.665e-08 au
q 3.100049438441239 1.2918e-07 au
i 4.594232409315461 3.9738e-06 deg
node 123.9997258913497 4.9676e-05 deg
peri 13.72806787767933 0.00016754 deg
M 228.3909728113157 0.00016165 deg
tp 2459943.086578084670
(2022-Dec-29.58657808)
0.0009138 TDB
period 2031.252519838291
5.56
1.6162e-05
4.425e-08
d
yr
n .1772305493699325 1.4102e-09 deg/d
Q 3.177743528179098 1.6856e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1937  
   data-arc span      9501 days (26.01 yr)  
   first obs. used      1995-02-07  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52685  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:10:17  

Additional Information
 Earth MOID = 2.11302 au 
 Jupiter MOID = 1.80031 au 
 T_jup = 3.206 
[ 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 13.19   n/a E2021B10  
rotation period rot_per 177.121 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.]

22712 (1998 RF78)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 RF78 = 1996 LH4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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