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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
85624 (1998 HU138)
Classification: Main-belt Asteroid          SPK-ID: 2085624
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1048376090445129 3.9536e-08  
a 2.400312027570029 1.3943e-08 au
q 2.1486690536388 9.7701e-08 au
i 6.466268530011593 5.0578e-06 deg
node 159.1850015384358 3.6974e-05 deg
peri 310.8362448291943 4.4637e-05 deg
M 316.2352306134342 2.7787e-05 deg
tp 2458765.628532911426
(2019-Oct-09.12853291)
0.00010558 TDB
period 1358.313380405042
3.72
1.1836e-05
3.241e-08
d
yr
n .2650345680115805 2.3094e-09 deg/d
Q 2.651955001501258 1.5405e-08 au
  Orbit Determination Parameters
   # obs. used (total)      635  
   data-arc span      7621 days (20.87 yr)  
   first obs. used      1998-03-25  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60553  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:43:53  

Additional Information
 Earth MOID = 1.17168 au 
 Jupiter MOID = 2.43765 au 
 T_jup = 3.510 
[ 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 15.8   n/a MPO417414  

85624 (1998 HU138)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 HU138 = 2000 WN39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin