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JPL Small-Body Database Browser
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74634 (1999 RJ50)
Classification: Main-belt Asteroid          SPK-ID: 2074634
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2578997526448098 4.6307e-08  
a 2.364546217769003 1.2339e-08 au
q 1.754730333089157 1.0845e-07 au
i 1.742853558898696 4.1268e-06 deg
node 247.2724898954961 0.00016974 deg
peri 79.3732252893673 0.00016995 deg
M 147.5740408757116 1.334e-05 deg
tp 2458056.088104269291
(2017-Oct-29.58810427)
4.5963e-05 TDB
period 1328.067465660297
3.64
1.0395e-05
2.846e-08
d
yr
n .2710705662991398 2.1218e-09 deg/d
Q 2.974362102448849 1.5521e-08 au
  Orbit Determination Parameters
   # obs. used (total)      562  
   data-arc span      9145 days (25.04 yr)  
   first obs. used      1994-02-11  
   last obs. used      2019-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56663  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:25:08  

Additional Information
 Earth MOID = .743256 au 
 Jupiter MOID = 2.37964 au 
 T_jup = 3.503 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456308.5 (2013-Jan-16.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2591730972255221 4.6496e-08  
q 1.751055315417369 1.0907e-07 au
tp 2456726.064745292108
(2014-Mar-09.56474529)
3.8357e-05 TDB
node 247.6148546301372 0.00017 deg
peri 78.71306533701897 0.0001702 deg
i 1.741794039945667 4.1235e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      562  
   data-arc span      9145 days (25.04 yr)  
   first obs. used      1994-02-11  
   last obs. used      2019-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56663  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:25:08  

Additional Information
 Jupiter MOID = 2.37964 au 
 T_jup = 3.503 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.16188071746276E-15 -5.054111647251187E-15 5.698329747459388E-13 -1.875722852424357E-14 1.162194533778694E-13 -1.062859953214697E-15
q -5.054111647251187E-15 1.189691314391381E-14 -1.130420563432781E-12 4.618319005244515E-14 -2.366372678062927E-13 2.46417488292509E-15
tp 5.698329747459388E-13 -1.130420563432781E-12 1.471282303908419E-9 -2.789272830731427E-12 3.474160840977918E-10 -5.420025715464102E-13
node -1.875722852424357E-14 4.618319005244515E-14 -2.789272830731427E-12 2.889861456692044E-8 -2.888576385382707E-8 -7.594909426362264E-11
peri 1.162194533778694E-13 -2.366372678062927E-13 3.474160840977918E-10 -2.888576385382707E-8 2.896757660396295E-8 7.57915639128578E-11
i -1.062859953214697E-15 2.46417488292509E-15 -5.420025715464102E-13 -7.594909426362264E-11 7.57915639128578E-11 1.700333472282633E-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 16.0   n/a MPO432298  
diameter diameter 1.459 km 0.223 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.330   0.120 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74634 (1999 RJ50)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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