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JPL Small-Body Database Browser
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74626 (1999 RW38)
Classification: Main-belt Asteroid          SPK-ID: 2074626
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07113277000035374 3.0622e-08  
a 2.237974335671811 9.256e-09 au
q 2.078781021985773 6.7416e-08 au
i 6.583234559493204 3.3483e-06 deg
node 98.56425480258936 4.1777e-05 deg
peri 178.5352627106283 5.5072e-05 deg
M 10.66383026289334 3.5968e-05 deg
tp 2458564.276383886510
(2019-Mar-21.77638389)
0.00012222 TDB
period 1222.872221272431
3.35
7.5865e-06
2.077e-08
d
yr
n .294388893408185 1.8263e-09 deg/d
Q 2.397167649357848 9.9144e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1060  
   data-arc span      7912 days (21.66 yr)  
   first obs. used      1998-03-24  
   last obs. used      2019-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53416  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:26:55  

Additional Information
 Earth MOID = 1.06182 au 
 Jupiter MOID = 2.67047 au 
 T_jup = 3.625 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456955.5 (2014-Oct-25.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07073297482795975 3.0578e-08  
q 2.079856392576589 6.7242e-08 au
tp 2457342.472418273204
(2015-Nov-15.97241827)
0.00012503 TDB
node 98.59180642763661 4.1793e-05 deg
peri 178.7912281277176 5.5255e-05 deg
i 6.581958166324882 3.3474e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1060  
   data-arc span      7912 days (21.66 yr)  
   first obs. used      1998-03-24  
   last obs. used      2019-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53416  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:26:55  

Additional Information
 Jupiter MOID = 2.67047 au 
 T_jup = 3.625 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.349866624997186E-16 -2.039856026513299E-15 -1.859348856626599E-13 -2.512954719020069E-15 -4.130221377853762E-14 -6.802374335366601E-16
q -2.039856026513299E-15 4.521528174582025E-15 1.134681628035973E-13 4.334802656112769E-15 -6.663841596330182E-16 1.535189981549829E-15
tp -1.859348856626599E-13 1.134681628035973E-13 1.563183949017776E-8 6.177608013858331E-11 4.545605869643625E-9 5.794602630803513E-12
node -2.512954719020069E-15 4.334802656112769E-15 6.177608013858331E-11 1.746664496898341E-9 -1.716537035191698E-9 1.235760826491627E-11
peri -4.130221377853762E-14 -6.663841596330182E-16 4.545605869643625E-9 -1.716537035191698E-9 3.053143869395745E-9 -1.057223992877707E-11
i -6.802374335366601E-16 1.535189981549829E-15 5.794602630803513E-12 1.235760826491627E-11 -1.057223992877707E-11 1.120537193507829E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO436304  

74626 (1999 RW38)          Discovered 1999-Sep-12 by Broughton, J. at Reedy Creek
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RW38 = 1998 FK86 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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