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JPL Small-Body Database Browser
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109768 (2001 RJ78)
Classification: Outer Main-belt Asteroid          SPK-ID: 2109768
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 .07628350417667262 6.4273e-08  
a 3.210305105329452 2.714e-08 au
q 2.965411782418659 2.1284e-07 au
i 16.26681545244465 7.6015e-06 deg
node 16.63156630607845 1.5578e-05 deg
peri 319.4518704205805 4.1751e-05 deg
M 61.41441023678289 3.9259e-05 deg
tp 2458242.085413526349
(2018-May-03.58541353)
0.00022988 TDB
period 2100.960517784716
5.75
2.6643e-05
7.294e-08
d
yr
n .1713501976608248 2.1729e-09 deg/d
Q 3.455198428240244 2.9211e-08 au
  Orbit Determination Parameters
   # obs. used (total)      690  
   data-arc span      8844 days (24.21 yr)  
   first obs. used      1995-09-20  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52177  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 09:07:24  

Additional Information
 Earth MOID = 1.97666 au 
 Jupiter MOID = 1.93652 au 
 T_jup = 3.124 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456893.5 (2014-Aug-24.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07403389413889773 6.2134e-08  
q 2.976882340734444 2.0344e-07 au
tp 2456121.526136632872
(2012-Jul-13.02613663)
0.00024928 TDB
node 16.85254581146132 1.5651e-05 deg
peri 316.4955702243799 4.395e-05 deg
i 16.2167268309136 7.5858e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      690  
   data-arc span      8844 days (24.21 yr)  
   first obs. used      1995-09-20  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52177  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 09:07:24  

Additional Information
 Jupiter MOID = 1.93652 au 
 T_jup = 3.124 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.860693215285305E-15 -1.254644858445468E-14 8.764063693927388E-12 1.934789550616067E-15 1.416415249475986E-12 3.97005831259589E-15
q -1.254644858445468E-14 4.138715623891606E-14 -2.935429116399103E-11 -1.198391706338729E-15 -4.712491316116894E-12 -1.710326958260809E-14
tp 8.764063693927388E-12 -2.935429116399103E-11 6.21402145921076E-8 2.231443376857107E-11 1.024778905064268E-8 -6.163606778468344E-13
node 1.934789550616067E-15 -1.198391706338729E-15 2.231443376857107E-11 2.449672597786323E-10 -2.308441636227398E-10 -1.993356019926914E-11
peri 1.416415249475986E-12 -4.712491316116894E-12 1.024778905064268E-8 -2.308441636227398E-10 1.931602607761065E-9 1.810224141697523E-11
i 3.97005831259589E-15 -1.710326958260809E-14 -6.163606778468344E-13 -1.993356019926914E-11 1.810224141697523E-11 5.754399083785223E-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 14.2   n/a MPO325227  
diameter diameter 7.968 km 0.312 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109768 (2001 RJ78)          Discovered 2001-Sep-10 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2001 RJ78 = 1995 SH48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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