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 ]  
38084 (1999 HB12)
Classification: TransNeptunian Object          SPK-ID: 2038084
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4222389839175265 4.6014e-05  
a 56.36317502075211 0.005119 au
q 32.56444526962403 0.00038168 au
i 13.1480815066558 4.0307e-05 deg
node 166.4457270792046 0.00024481 deg
peri 66.78962706312834 0.0018029 deg
M .1089630000040951 0.00063719 deg
tp 2458553.719145289357
(2019-Mar-11.21914529)
0.27829 TDB
period 154558.0398410338
423.16
21.056
0.05765
d
yr
n .002329222086216075 3.1732e-07 deg/d
Q 80.16190477188019 0.0072804 au
  Orbit Determination Parameters
   # obs. used (total)      139  
   data-arc span      5907 days (16.17 yr)  
   first obs. used      1999-03-20  
   last obs. used      2015-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .51032  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-05 19:12:55  

Additional Information
 Earth MOID = 31.5768 au 
 Jupiter MOID = 27.2811 au 
 T_jup = 5.903 
[ 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 7.0   n/a MPO385058  

38084 (1999 HB12)          Discovered 1999-Apr-18 by Buie, M., Millis, R. at Kitt Peak
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19
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