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JPL Small-Body Database Browser
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173086 Nireus (2007 RS8)
Classification: Jupiter Trojan          SPK-ID: 2173086
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09571527092520307 7.8488e-08  
a 5.13424002246003 1.6478e-07 au
q 4.642814847715248 5.12e-07 au
i 17.50089183636308 6.7098e-06 deg
node 237.4011395820459 2.3416e-05 deg
peri 184.7037523247473 5.0696e-05 deg
M 274.5396880006787 5.063e-05 deg
tp 2459609.229337378367
(2022-Jan-29.72933738)
0.00062473 TDB
period 4249.253869551701
11.63
0.00020457
5.601e-07
d
yr
n .08472075593779013 4.0786e-09 deg/d
Q 5.625665197204813 1.8055e-07 au
  Orbit Determination Parameters
   # obs. used (total)      360  
   data-arc span      7641 days (20.92 yr)  
   first obs. used      1998-11-25  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54043  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 19:45:16  

Additional Information
 Earth MOID = 3.65563 au 
 Jupiter MOID = .250426 au 
 T_jup = 2.899 
[ 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 12.6   n/a MPO338377  
diameter diameter 15.513 km 0.729 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.073   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

173086 Nireus           Discovered 2007 Sept. 8 by M. Ory at Vicques.
Nireus, the king of Syme island, fought for the Greeks during the Trojan war. Although of low birth, he was considered the most handsome of the Greeks next to Achilles. Nireus was killed by Eurypylos. The name was suggested by A. Martinez.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080321/MPCPages.arcLast Updated: 2008-03-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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