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 ]  
312962 (1997 SM30)
Classification: Jupiter Trojan          SPK-ID: 2312962
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2142308797085506 1.6266e-07  
a 5.20706996432501 2.6028e-07 au
q 4.091554785163692 1.0066e-06 au
i 4.806905866236177 1.5295e-05 deg
node 19.46803217440814 0.00016232 deg
peri 6.495237333975127 0.00016854 deg
M 327.8375347338344 5.5635e-05 deg
tp 2459388.235330614676
(2021-Jun-22.73533061)
0.00069624 TDB
period 4339.988177713609
11.88
0.00032541
8.909e-07
d
yr
n .08294953471270861 6.2194e-09 deg/d
Q 6.322585143486328 3.1604e-07 au
  Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      8030 days (21.98 yr)  
   first obs. used      1997-09-30  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68688  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:13:58  

Additional Information
 Earth MOID = 3.09596 au 
 Jupiter MOID = .323808 au 
 T_jup = 2.947 
[ 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 14.0   n/a MPO260642  
diameter diameter 7.710 km 0.648 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.075   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

312962 (1997 SM30)          Discovered 1997-Sep-30 by Spacewatch at Kitt Peak
Reference: 20120207/Numbers.arcLast Updated: 2012-02-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-08 04:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin