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 ]  
503858 (1998 HQ151)
Classification: TransNeptunian Object          SPK-ID: 2503858
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2890385215329073 0.00029058  
a 39.78808700717651 0.020219 au
q 28.28779716399954 0.0029591 au
i 11.92231353594752 0.00014154 deg
node 228.7733937317588 0.00045029 deg
peri 347.3383941433245 0.026313 deg
M 37.32610918734744 0.04161 deg
tp 2449095.803872407825
(1993-Apr-18.30387241)
3.4783 TDB
period 91670.16548012043
250.98
69.877
0.1913
d
yr
n .003927122833415955 2.9935e-06 deg/d
Q 51.28837685035349 0.026064 au
  Orbit Determination Parameters
   # obs. used (total)      27  
   data-arc span      7059 days (19.33 yr)  
   first obs. used      1998-04-28  
   last obs. used      2017-08-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .20262  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Nov-07 18:23:01  

Additional Information
 Earth MOID = 27.2823 au 
 Jupiter MOID = 22.8643 au 
 T_jup = 5.311 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.8   n/a MPO01427  

503858 (1998 HQ151)          Discovered 1998-Apr-28 by Trujillo, C. A., Tholen, D. C., Jewitt, D. J., Luu, J. X. at Mauna Kea
Reference: Last Updated: 2017-11-07
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin