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102111 (1999 RQ167)
Classification: Main-belt Asteroid          SPK-ID: 2102111
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1900969753954305 3.2271e-08  
a 2.335370360453126 8.4912e-09 au
q 1.89142351850285 7.7162e-08 au
i 5.846033700238094 4.056e-06 deg
node 20.19975041527242 3.0477e-05 deg
peri 39.3917210717245 3.2119e-05 deg
M 293.8474065077274 1.0807e-05 deg
tp 2459440.039118693569
(2021-Aug-13.53911869)
3.9769e-05 TDB
period 1303.563143594027
3.57
7.1095e-06
1.946e-08
d
yr
n .2761661387629075 1.5062e-09 deg/d
Q 2.779317202403401 1.0105e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1316  
   data-arc span      7681 days (21.03 yr)  
   first obs. used      1999-08-12  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51012  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:40:24  

Additional Information
 Earth MOID = .90694 au 
 Jupiter MOID = 2.5789 au 
 T_jup = 3.537 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.23   n/a E2021B55  
diameter diameter 2.264 km 0.281 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.314   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

102111 (1999 RQ167)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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