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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2142506906018422 1.6381e-07  
a 5.213907890715019 2.6137e-07 au
q 4.096824524394932 1.0109e-06 au
i 4.805023636971584 1.5284e-05 deg
node 19.51928549634964 0.00016234 deg
peri 6.059227964105345 0.00016849 deg
M 295.0042847143992 5.3177e-05 deg
tp 2459385.601280354257
(2021-Jun-20.10128035)
0.00069376 TDB
period 4348.5398950621
11.91
0.00032699
8.952e-07
d
yr
n .08278640846983858 6.2251e-09 deg/d
Q 6.330991257035106 3.1737e-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 = 3.1004 au 
 Jupiter MOID = .329392 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 ]
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