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2339 Anacreon (2509 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2002339
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1974563799637337 2.7803e-08  
a 2.525916949722257 6.6079e-09 au
q 2.027158532741064 7.1238e-08 au
i 4.852358101568767 1.0107e-06 deg
node 11.74215931270801 8.3878e-06 deg
peri 340.8374125764553 8.7973e-06 deg
M 7.907083704866256 3.7198e-06 deg
tp 2459168.293697841421
(2020-Nov-14.79369784)
1.5104e-05 TDB
period 1466.314157007486
4.01
5.7539e-06
1.575e-08
d
yr
n .2455135540222177 9.6341e-10 deg/d
Q 3.02467536670345 7.9126e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2894  
   data-arc span      26424 days (72.34 yr)  
   first obs. used      1948-10-09  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4175  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:40:00  

Additional Information
 Earth MOID = 1.02104 au 
 Jupiter MOID = 2.41281 au 
 T_jup = 3.421 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.19   n/a E2021B10  
diameter diameter 7.347 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 24. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
geometric albedo albedo 0.121   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.860   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.88 deg.

2339 Anacreon (2509 P-L)          Discovered 1960-Sep-24 by PLS at Palomar
These planets have all been discovered as a result of the Palomar survey of faint minor planets and subsequently identified with planets observed at other oppositions. In Sept. and Oct. 1960, T. Gehrels exposed 130 plates with the 122 cm Schmidt camera at Palomar. In the following years C. J. van Houten and I. van Houten-Groeneveld measured these plates astrometrically and photometrically at Leiden. P. Herget, Cincinnati, computed the orbits of the planets found on the NORC computer, Dahlgren, Virginia, USA.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 2509 P-L = 1948 TH1 = 1952 UH1 = 1972 RK3 = 1976 QQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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