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 ]  
442258 (2011 PH8)
Classification: Main-belt Asteroid          SPK-ID: 2442258
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08848233654260748 8.2933e-08  
a 2.642748188505066 4.0703e-08 au
q 2.408911653892394 2.3147e-07 au
i 13.51807903183033 9.5251e-06 deg
node 162.9539410192044 2.1886e-05 deg
peri 140.5797006785952 4.4901e-05 deg
M 316.1868025237704 3.9453e-05 deg
tp 2458791.478532060833
(2019-Nov-03.97853206)
0.00017379 TDB
period 1569.21374157183
4.30
3.6253e-05
9.926e-08
d
yr
n .2294142540705767 5.3001e-09 deg/d
Q 2.876584723117737 4.4305e-08 au
  Orbit Determination Parameters
   # obs. used (total)      146  
   data-arc span      7623 days (20.87 yr)  
   first obs. used      1998-08-25  
   last obs. used      2019-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54784  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:54  

Additional Information
 Earth MOID = 1.4088 au 
 Jupiter MOID = 2.41671 au 
 T_jup = 3.349 
[ 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 16.8   n/a MPO437720  

442258 (2011 PH8)          Discovered 1998-Aug-25 by ODAS at Caussols
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | 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