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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1250956924647286 7.1875e-08  
a 3.186670660579372 3.796e-08 au
q 2.788031887637161 2.3775e-07 au
i 12.92799708611967 7.7343e-06 deg
node 324.4800490976053 2.2153e-05 deg
peri 29.08609428942881 3.0107e-05 deg
M 325.1480275825101 2.2803e-05 deg
tp 2459401.654179481108
(2021-Jul-06.15417948)
0.00013384 TDB
period 2077.802189951754
5.69
3.7127e-05
1.016e-07
d
yr
n .1732599964236052 3.0959e-09 deg/d
Q 3.585309433521582 4.2709e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50577  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:44:04  

Additional Information
 Earth MOID = 1.78734 au 
 Jupiter MOID = 1.84852 au 
 T_jup = 3.146 
[ 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 14.32   n/a E2021B10  
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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