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91131 (1998 HX144)
Classification: Main-belt Asteroid          SPK-ID: 2091131
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09080588807066901 5.6977e-08  
a 2.657420910086358 1.5668e-08 au
q 2.416111444368401 1.5445e-07 au
i 18.65523585861902 6.1173e-06 deg
node 52.43446248747511 1.3217e-05 deg
peri 322.4499171372474 2.9558e-05 deg
M 240.7387916520548 2.7893e-05 deg
tp 2459524.686284511030
(2021-Nov-06.18628451)
0.00012335 TDB
period 1582.300439833017
4.33
1.3994e-05
3.831e-08
d
yr
n .2275168425270686 2.0121e-09 deg/d
Q 2.898730375804316 1.7091e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1024  
   data-arc span      10473 days (28.67 yr)  
   first obs. used      1991-12-04  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53655  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:15:33  

Additional Information
 Earth MOID = 1.44155 au 
 Jupiter MOID = 2.54678 au 
 T_jup = 3.307 
[ 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 14.5   n/a MPO436409  
diameter diameter 4.418 km 0.171 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.189   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91131 (1998 HX144)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1998 HX144 = 1991 XL3 = 2000 XE32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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