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
JPL Small-Body Database Browser
Search: [ help ]  
312457 (2008 QH42)
Classification: Jupiter Trojan          SPK-ID: 2312457
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09187117456397094 8.9007e-08  
a 5.290919501316256 2.0265e-07 au
q 4.804836512206911 6.0005e-07 au
i 15.85078083932471 8.0208e-06 deg
node 170.8655569639589 2.1449e-05 deg
peri 232.01520186654 4.5582e-05 deg
M 315.0413462667145 4.4128e-05 deg
tp 2459555.644389617137
(2021-Dec-07.14438962)
0.00055076 TDB
period 4445.239429271597
12.17
0.00025538
6.992e-07
d
yr
n .08098551399266024 4.6527e-09 deg/d
Q 5.777002490425599 2.2126e-07 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      7101 days (19.44 yr)  
   first obs. used      2001-02-20  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 20:07:59  

Additional Information
 Earth MOID = 3.8381 au 
 Jupiter MOID = .0258014 au 
 T_jup = 2.915 
[ 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 12.8   n/a MPO413277  
diameter diameter 14.574 km 0.761 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.063   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

312457 (2008 QH42)          Discovered 2008-Aug-23 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-21 17:33 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin