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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03374223353751021 2.0598e-08  
a 5.243562931651447 6.5267e-08 au
q 5.066633406643033 1.4983e-07 au
i 6.577644029281521 5.1359e-07 deg
node 176.3067914576586 1.4636e-05 deg
peri 130.4419085214413 4.7331e-05 deg
M 313.6961138599248 4.4896e-05 deg
tp 2459960.596096676630
(2023-Jan-16.09609668)
0.00054958 TDB
period 4385.69225462545
12.01
8.1883e-05
2.242e-07
d
yr
n .0820851028980247 1.5326e-09 deg/d
Q 5.420492456659862 6.7469e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2422  
   data-arc span      23956 days (65.59 yr)  
   first obs. used      1955-11-24  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .472  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:53:33  

Additional Information
 Earth MOID = 4.05608 au 
 Jupiter MOID = .132367 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 10.75   n/a MPO614063  
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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