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74219 (1998 RM78)
Classification: Main-belt Asteroid          SPK-ID: 2074219
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08218525286652804 3.7239e-08  
a 2.46428521871256 9.5219e-09 au
q 2.261757314877421 8.7611e-08 au
i 7.151203637508805 4.4737e-06 deg
node 40.34862785032436 2.2823e-05 deg
peri 122.8507686877012 3.461e-05 deg
M 63.97840567482392 2.5871e-05 deg
tp 2458749.388965293709
(2019-Sep-22.88896529)
0.0001012 TDB
period 1412.976324445017
3.87
8.1895e-06
2.242e-08
d
yr
n .2547813390584583 1.4767e-09 deg/d
Q 2.6668131225477 1.0304e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2267  
   data-arc span      12848 days (35.18 yr)  
   first obs. used      1985-04-14  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45619  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:48:59  

Additional Information
 Earth MOID = 1.2773 au 
 Jupiter MOID = 2.31289 au 
 T_jup = 3.473 
[ 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 13.7   n/a MPO333432  
rotation period rot_per 5.7 h n/a LCDB (Rev. 2019-August); 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:
[Warner, B.D. (2011) Minor Planet Bull. 38, 82-86.]

74219 (1998 RM78)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RM78 = 1985 GC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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