Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07412160043452835 7.5758e-08  
a 5.129152961084126 1.1223e-07 AU
q 4.748971934735071 3.9609e-07 AU
i 13.90843480855006 9.3969e-06 deg
node 327.401093517346 2.7299e-05 deg
peri 95.61946929936376 7.3471e-05 deg
M 123.5060037948744 6.5156e-05 deg
tp 2455544.865058500091
(2010-Dec-14.36505850)
0.00077776 JED
period 4242.940123059142
11.62
0.00013926
3.813e-07
d
yr
n .08484682544622889 2.7848e-09 deg/d
Q 5.509333987433182 1.2055e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      902  
   data-arc span      22734 days (62.24 yr)  
   first obs. used      1953-02-15  
   last obs. used      2015-05-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58154  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:39:33  

Additional Information
 Earth MOID = 3.79793 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. 2015-May); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Jul-01 06:35 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin