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JPL Small-Body Database Browser
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312609 (2009 RW55)
Classification: Jupiter Trojan          SPK-ID: 2312609
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04740581889867139 8.2634e-08  
a 5.275970831149666 4.4052e-07 au
q 5.025859113413513 7.8964e-07 au
i 5.104286954798089 6.4099e-06 deg
node 64.61841206845828 9.2363e-05 deg
peri 10.76523001201503 0.0001944 deg
M 243.4456970557331 0.00018461 deg
tp 2460033.604356626924
(2023-Mar-30.10435663)
0.0024266 TDB
period 4426.413743235119
12.12
0.00055438
1.518e-06
d
yr
n .08132994809854532 1.0186e-08 deg/d
Q 5.526082548885821 4.614e-07 au
  Orbit Determination Parameters
   # obs. used (total)      197  
   data-arc span      6374 days (17.45 yr)  
   first obs. used      2002-03-12  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60735  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:02:06  

Additional Information
 Earth MOID = 4.04089 au 
 Jupiter MOID = .0246051 au 
 T_jup = 2.990 
[ 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 13.3   n/a MPO455304  
diameter diameter 11.749 km 1.161 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.067   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

312609 (2009 RW55)          Discovered 2009-Sep-15 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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