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JPL Small-Body Database Browser
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91127 (1998 HY122)
Classification: Main-belt Asteroid          SPK-ID: 2091127
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06785436733075192 4.6113e-08  
a 2.743061237903929 1.5604e-08 au
q 2.556932553056449 1.2742e-07 au
i 11.01931364721839 5.4982e-06 deg
node 184.3747604589297 1.9078e-05 deg
peri 340.7030192296833 3.5583e-05 deg
M 1.250311121782941 3.0559e-05 deg
tp 2458994.736752438099
(2020-May-25.23675244)
0.00014085 TDB
period 1659.402276871597
4.54
1.416e-05
3.877e-08
d
yr
n .2169455863822806 1.8512e-09 deg/d
Q 2.92918992275141 1.6663e-08 au
  Orbit Determination Parameters
   # obs. used (total)      961  
   data-arc span      7929 days (21.71 yr)  
   first obs. used      1998-04-23  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58652  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:00:32  

Additional Information
 Earth MOID = 1.56519 au 
 Jupiter MOID = 2.04164 au 
 T_jup = 3.319 
[ 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 14.6   n/a MPO422267  
diameter diameter 4.360 km 0.324 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.147   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91127 (1998 HY122)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 HY122 = 2000 WO174 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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