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 ]  
48884 (1998 HJ149)
Classification: Main-belt Asteroid          SPK-ID: 2048884
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1902097411142771 4.4984e-08  
a 2.331828118973099 9.8916e-09 au
q 1.888291696140234 1.0576e-07 au
i 2.228634181055813 4.9142e-06 deg
node 11.81589724456369 0.0001375 deg
peri 254.9102591451222 0.00013808 deg
M 296.8598290806946 1.4014e-05 deg
tp 2458828.611133137321
(2019-Dec-11.11113314)
5.1125e-05 TDB
period 1300.598442066095
3.56
8.2757e-06
2.266e-08
d
yr
n .2767956567963545 1.7613e-09 deg/d
Q 2.775364541805964 1.1773e-08 au
  Orbit Determination Parameters
   # obs. used (total)      558  
   data-arc span      7656 days (20.96 yr)  
   first obs. used      1998-04-25  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5978  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:48:21  

Additional Information
 Earth MOID = .873503 au 
 Jupiter MOID = 2.31663 au 
 T_jup = 3.545 
[ 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 16.0   n/a MPO436125  

48884 (1998 HJ149)          Discovered 1998-Apr-25 by Elst, E. W. at La Silla
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HJ149 = 1999 VE166 
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