Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09020845849052453 5.5068e-08  
a 2.658486319570948 1.5396e-08 au
q 2.418668366764305 1.4995e-07 au
i 18.64452670442409 5.8008e-06 deg
node 52.362464823891 1.3203e-05 deg
peri 322.0983705391097 2.8107e-05 deg
M 331.1505603276946 2.5578e-05 deg
tp 2459523.377599504969
(2021-Nov-04.87759950)
0.00011261 TDB
period 1583.252095729143
4.33
1.3754e-05
3.766e-08
d
yr
n .2273800874611869 1.9753e-09 deg/d
Q 2.898304272377592 1.6785e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1093  
   data-arc span      10840 days (29.68 yr)  
   first obs. used      1991-12-04  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52961  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:37  

Additional Information
 Earth MOID = 1.44367 au 
 Jupiter MOID = 2.54123 au 
 T_jup = 3.306 
[ 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-25 15:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin