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101903 (1999 RR)
Classification: Main-belt Asteroid          SPK-ID: 2101903
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1656710431404861 4.6732e-08  
a 3.151998532098808 2.3556e-08 au
q 2.629803647308718 1.4634e-07 au
i 6.970005351395395 4.4819e-06 deg
node 85.29806019271847 4.0914e-05 deg
peri 332.5346488759515 4.2869e-05 deg
M 279.9309218338063 1.5615e-05 deg
tp 2459851.110816325421
(2022-Sep-28.61081633)
9.1662e-05 TDB
period 2043.983740357973
5.60
2.2913e-05
6.273e-08
d
yr
n .1761266456732926 1.9744e-09 deg/d
Q 3.674193416888899 2.7459e-08 au
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      7235 days (19.81 yr)  
   first obs. used      1999-08-12  
   last obs. used      2019-06-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53188  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:17  

Additional Information
 Earth MOID = 1.6443 au 
 Jupiter MOID = 1.6742 au 
 T_jup = 3.175 
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Orbital Elements at Epoch 2457210.5 (2015-Jul-07.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1713088250722593 4.6165e-08  
q 2.602745585687913 1.4454e-07 au
tp 2457816.939666344182
(2017-Mar-04.43966634)
7.8174e-05 TDB
node 85.40639027624673 4.0747e-05 deg
peri 333.0676305374047 4.2563e-05 deg
i 6.992930985213788 4.5038e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      7235 days (19.81 yr)  
   first obs. used      1999-08-12  
   last obs. used      2019-06-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53188  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:17  

Additional Information
 Jupiter MOID = 1.6742 au 
 T_jup = 3.175 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.13120375640906E-15 -6.617163853839451E-15 -8.090988466630456E-13 5.208657139484015E-15 -1.851021320601564E-13 -1.118127180110624E-16
q -6.617163853839451E-15 2.089313353329405E-14 3.090771982152908E-12 -1.207863673699342E-14 6.429825640761462E-13 2.284146343841725E-16
tp -8.090988466630456E-13 3.090771982152908E-12 6.111100482589776E-9 7.143528466543282E-12 9.987651358158381E-10 -1.109875328151466E-12
node 5.208657139484015E-15 -1.207863673699342E-14 7.143528466543282E-12 1.660352427141497E-9 -1.646890386723822E-9 -6.615909996808978E-11
peri -1.851021320601564E-13 6.429825640761462E-13 9.987651358158381E-10 -1.646890386723822E-9 1.811621012754679E-9 6.547604419950091E-11
i -1.118127180110624E-16 2.284146343841725E-16 -1.109875328151466E-12 -6.615909996808978E-11 6.547604419950091E-11 2.028445079189454E-11

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 14.22   n/a MPCxxxxx  
diameter diameter 7.690 km 0.353 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.075   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101903 (1999 RR)          Discovered 1999-Sep-03 by Sarounova, L. at Ondrejov
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1999 RR = 2000 VQ37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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