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91171 (1998 QG110)
Classification: Main-belt Asteroid          SPK-ID: 2091171
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1255828591266353 7.1495e-08  
a 3.185375016355295 3.6452e-08 au
q 2.785346514410845 2.3688e-07 au
i 12.91857315327561 7.7277e-06 deg
node 324.5110728345526 2.2189e-05 deg
peri 29.45591849707552 3.0227e-05 deg
M 290.179203937903 2.2567e-05 deg
tp 2459403.237042422520
(2021-Jul-07.73704242)
0.00013438 TDB
period 2076.535122045309
5.69
3.5644e-05
9.759e-08
d
yr
n .1733657168511619 2.9759e-09 deg/d
Q 3.585403518299745 4.103e-08 au
  Orbit Determination Parameters
   # obs. used (total)      546  
   data-arc span      7987 days (21.87 yr)  
   first obs. used      1998-08-03  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50576  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:40:55  

Additional Information
 Earth MOID = 1.7867 au 
 Jupiter MOID = 1.85 au 
 T_jup = 3.147 
[ 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 14.3   n/a MPO348072  
diameter diameter 8.298 km 1.363 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.059   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

91171 (1998 QG110)          Discovered 1998-Aug-23 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 QG110 = 2001 DH72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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