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JPL Small-Body Database Browser
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74184 (1998 RM39)
Classification: Main-belt Asteroid          SPK-ID: 2074184
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05297160789511639 5.4348e-08  
a 2.394243598869953 1.1032e-08 au
q 2.267416665745221 1.3011e-07 au
i 6.710829636912857 5.21e-06 deg
node 16.90360026542746 3.2192e-05 deg
peri 152.6753805737516 5.4329e-05 deg
M 24.15963657848064 4.128e-05 deg
tp 2458509.688923134991
(2019-Jan-26.18892313)
0.00015522 TDB
period 1353.165539771503
3.70
9.3527e-06
2.561e-08
d
yr
n .2660428376418676 1.8388e-09 deg/d
Q 2.521070531994685 1.1617e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1087  
   data-arc span      7562 days (20.70 yr)  
   first obs. used      1998-08-27  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5376  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:41:13  

Additional Information
 Earth MOID = 1.27443 au 
 Jupiter MOID = 2.44202 au 
 T_jup = 3.519 
[ 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 15.0   n/a MPO337817  

74184 (1998 RM39)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RM39 = 1999 XN231 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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