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109438 (2001 QR199)
Classification: Main-belt Asteroid          SPK-ID: 2109438
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1632568765689351 5.2041e-08  
a 3.071981614616913 2.0618e-08 au
q 2.570459491337362 1.579e-07 au
i 5.756895886258667 4.1643e-06 deg
node 256.2447849530214 5.2323e-05 deg
peri 100.6095880642662 5.3807e-05 deg
M 189.5253891815265 1.58e-05 deg
tp 2459931.787024479407
(2022-Dec-18.28702448)
9.1679e-05 TDB
period 1966.64668834226
5.38
1.98e-05
5.421e-08
d
yr
n .1830527069930664 1.8429e-09 deg/d
Q 3.573503737896464 2.3985e-08 au
  Orbit Determination Parameters
   # obs. used (total)      820  
   data-arc span      10792 days (29.55 yr)  
   first obs. used      1990-10-10  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56026  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:05:04  

Additional Information
 Earth MOID = 1.57442 au 
 Jupiter MOID = 1.94496 au 
 T_jup = 3.202 
[ show covariance matrix ]

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 14.4   n/a MPO436526  
diameter diameter 7.851 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109438 (2001 QR199)          Discovered 2001-Aug-22 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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