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1870 Glaukos (1971 FE)
Classification: Jupiter Trojan          SPK-ID: 2001870
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0335533549163062 4.0789e-08  
a 5.243858966447265 7.2564e-08 au
q 5.067909905415005 2.5486e-07 au
i 6.577562262871714 5.1792e-06 deg
node 176.3047494100094 3.6086e-05 deg
peri 130.0972504532079 9.0481e-05 deg
M 297.9241807796224 8.4381e-05 deg
tp 2459956.801375111616
(2023-Jan-12.30137511)
0.0010301 TDB
period 4386.063663108359
12.01
9.1041e-05
2.493e-07
d
yr
n .0820781519949192 1.7037e-09 deg/d
Q 5.419808027479525 7.4999e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2202  
   data-arc span      23797 days (65.15 yr)  
   first obs. used      1955-11-24  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48357  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 18:21:48  

Additional Information
 Earth MOID = 4.05594 au 
 Jupiter MOID = .132775 au 
 T_jup = 2.986 
[ 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 10.76   n/a E2021B10  
diameter diameter 47.649 km 0.774 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 5.986 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D.; French, L.M.; Davitt, C.; Coley, D.R. (2014) Minor Planet Bull. 41, 95-100.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.049   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

1870 Glaukos (1971 FE)          Discovered 1971-Mar-24 by Van Houten, C. J. at Palomar
Discovered by C. J. van Houten and I. van Houten-Groeneveld, Leiden, on plates exposed by T. Gehrels in a survey of faint Trojans with the 122 cm Schmidt camera at Palomar.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1971 FE = 1976 SM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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