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150196 (1998 RA4)
Classification: Main-belt Asteroid          SPK-ID: 2150196
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1916877947303523 6.496e-08  
a 2.265220301424071 1.2406e-08 au
q 1.831005217265667 1.5026e-07 au
i 10.34412704353645 7.4273e-06 deg
node 343.0631230380201 2.1638e-05 deg
peri 335.2284616685886 2.6091e-05 deg
M 215.9274893009789 1.3225e-05 deg
tp 2459698.859473637655
(2022-Apr-29.35947364)
4.6538e-05 TDB
period 1245.271631896222
3.41
1.023e-05
2.801e-08
d
yr
n .2890935525864462 2.3749e-09 deg/d
Q 2.699435385582476 1.4784e-08 au
  Orbit Determination Parameters
   # obs. used (total)      539  
   data-arc span      8157 days (22.33 yr)  
   first obs. used      1998-09-14  
   last obs. used      2021-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54135  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:43:53  

Additional Information
 Earth MOID = .822031 au 
 Jupiter MOID = 2.63613 au 
 T_jup = 3.571 
[ 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 16.3   n/a MPO449813  

150196 (1998 RA4)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

[ show close-approach data ]
Alternate Designations
 1998 RA4 = 2004 HF9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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