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2456 Palamedes (1966 BA1)
Classification: Jupiter Trojan          SPK-ID: 2002456
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07356673034493866 7.4034e-08  
a 5.130137481481988 1.0358e-07 au
q 4.75273004074934 3.9254e-07 au
i 13.90734982426031 8.7685e-06 deg
node 327.3873168839822 2.7184e-05 deg
peri 95.22713197446966 6.7574e-05 deg
M 174.901998482042 6.0504e-05 deg
tp 2455538.521162406250
(2010-Dec-08.02116241)
0.00071698 JED
period 4244.161804760433
11.62
0.00012854
3.519e-07
d
yr
n .08482240229300603 2.569e-09 deg/d
Q 5.507544922214636 1.112e-07 au
  Orbit Determination Parameters
   # obs. used (total)      917  
   data-arc span      23071 days (63.16 yr)  
   first obs. used      1953-02-15  
   last obs. used      2016-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58135  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:39:31  

Additional Information
 Earth MOID = 3.80046 au 
 Jupiter MOID = .118366 au 
 T_jup = 2.937 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.3 mag n/a MPO263367  
diameter diameter 91.66 km 3.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
rotation period rot_per 7.24 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2010) Minor Planet Bul. 37, 47-48.]
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
geometric albedo albedo 0.0304   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12

2456 Palamedes (1966 BA1)          Discovered 1966-Jan-30 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1966 BA1 = 1973 TJ = 1977 AK1 = 1979 EF 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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