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JPL Small-Body Database Browser
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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09080585080228579 7.6621e-08  
a 2.657420912019984 1.6935e-08 au
q 2.416111545164223 2.0257e-07 au
i 18.6552339848416 6.4983e-06 deg
node 52.43445417736678 1.535e-05 deg
peri 322.4498966867183 3.0908e-05 deg
M 240.7388168324245 2.8513e-05 deg
tp 2459524.686174408402
(2021-Nov-06.18617441)
0.0001262 TDB
period 1582.300441560016
4.33
1.5125e-05
4.141e-08
d
yr
n .2275168422787457 2.1748e-09 deg/d
Q 2.898730278875744 1.8472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      892  
   data-arc span      10013 days (27.41 yr)  
   first obs. used      1991-12-04  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53698  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:03:26  

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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