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12658 Peiraios (1973 SL)
Classification: Jupiter Trojan          SPK-ID: 2012658
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05653820558350591 4.4336e-08  
a 5.165214935063166 9.5893e-08 au
q 4.87318295118157 2.5884e-07 au
i 1.776687764478665 5.5225e-06 deg
node 111.8864638746203 0.00018064 deg
peri 326.3414231466651 0.00019044 deg
M 268.574887730121 6.3692e-05 deg
tp 2459689.415113459196
(2022-Apr-19.91511346)
0.00077323 TDB
period 4287.765484915487
11.74
0.0001194
3.269e-07
d
yr
n .08395981572837714 2.3381e-09 deg/d
Q 5.457246918944763 1.0131e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1228  
   data-arc span      16517 days (45.22 yr)  
   first obs. used      1973-09-19  
   last obs. used      2018-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55136  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:18:33  

Additional Information
 Earth MOID = 3.88873 au 
 Jupiter MOID = .0455878 au 
 T_jup = 2.996 
[ 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 11.2   n/a MPO259433  
diameter diameter 26.458 km 0.453 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.084   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

12658 Peiraios           Discovered 1973 Sept. 19 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Peiraios, son of Klytios, was a friend of Telemachos.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1973 SL = 1996 TZ39 = 1998 XU79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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