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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08236204879784198 3.9592e-08  
a 2.464485543300334 1.1072e-08 au
q 2.261505464721456 9.5539e-08 au
i 7.151357674380639 4.6712e-06 deg
node 40.35287781772922 2.8417e-05 deg
peri 122.7157982978604 3.8678e-05 deg
M 322.1793164330745 2.6012e-05 deg
tp 2458748.961796813360
(2019-Sep-22.46179681)
0.00010237 TDB
period 1413.148621659202
3.87
9.5233e-06
2.607e-08
d
yr
n .2547502750116387 1.7168e-09 deg/d
Q 2.667465621879213 1.1984e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1939  
   data-arc span      12463 days (34.12 yr)  
   first obs. used      1985-04-14  
   last obs. used      2019-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4771  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 05:57:46  

Additional Information
 Earth MOID = 1.27759 au 
 Jupiter MOID = 2.31384 au 
 T_jup = 3.472 
[ 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-January); 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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