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91125 (1998 HT118)
Classification: Main-belt Asteroid          SPK-ID: 2091125
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1249168466641798 4.8191e-08  
a 2.646995438804174 1.2896e-08 au
q 2.31634111545429 1.2752e-07 au
i 14.05223546622524 5.6995e-06 deg
node 127.5115072509742 2.341e-05 deg
peri 354.4427082755238 3.968e-05 deg
M 125.8301319848696 3.0079e-05 deg
tp 2458450.692869868637
(2018-Nov-28.19286987)
0.00013029 TDB
period 1572.998166060024
4.31
1.1495e-05
3.147e-08
d
yr
n .2288623138714217 1.6725e-09 deg/d
Q 2.977649762154059 1.4507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      764  
   data-arc span      7701 days (21.08 yr)  
   first obs. used      1998-04-23  
   last obs. used      2019-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:23:45  

Additional Information
 Earth MOID = 1.33231 au 
 Jupiter MOID = 2.0944 au 
 T_jup = 3.339 
[ 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 15.1   n/a MPO474789  
diameter diameter 2.438 km 0.267 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.326   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91125 (1998 HT118)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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