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4543 Phoinix (1989 CQ1)
Classification: Jupiter Trojan          SPK-ID: 2004543
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09620722518496223 4.9448e-08  
a 5.128914179860604 8.7891e-08 au
q 4.635475578404408 3.0107e-07 au
i 14.7070901801229 6.8918e-06 deg
node 325.3775461920764 1.8667e-05 deg
peri 84.64061907270789 3.9949e-05 deg
M 328.7993295446771 3.5763e-05 deg
tp 2459368.203700816413
(2021-Jun-02.70370082)
0.00042297 TDB
period 4242.643839447535
11.62
0.00010905
2.986e-07
d
yr
n .08485275069586753 2.1811e-09 deg/d
Q 5.622352781316798 9.6346e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1587  
   data-arc span      23849 days (65.30 yr)  
   first obs. used      1955-04-20  
   last obs. used      2020-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:16:50  

Additional Information
 Earth MOID = 3.68612 au 
 Jupiter MOID = .0235158 au 
 T_jup = 2.926 
[ 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 9.7   n/a MPO381294  
diameter diameter 63.836 km 0.383 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 38.866 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
geometric albedo albedo 0.057   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

4543 Phoinix (1989 CQ1)          Discovered 1989-Feb-02 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 CQ1 = 1930 DN = 1977 AP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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