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6090 (1989 DJ)
Classification: Jupiter Trojan          SPK-ID: 2006090
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05677548201019194 8.2354e-08  
a 5.314357684515116 1.3825e-07 AU
q 5.012632465402203 4.3426e-07 AU
i 20.18010145588558 1.3297e-05 deg
node 328.5340809094318 2.0193e-05 deg
peri 73.9339854223026 0.00011615 deg
M 123.2313030562865 0.00011278 deg
tp 2455268.731483427305
(2010-Mar-13.23148343)
0.001404 JED
period 4474.809989749917
12.25
0.00017462
4.781e-07
d
yr
n .08045034332734188 3.1394e-09 deg/d
Q 5.61608290362803 1.461e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      840  
   data-arc span      21923 days (60.02 yr)  
   first obs. used      1954-03-28  
   last obs. used      2014-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55258  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:49:46  

Additional Information
 Earth MOID = 4.07968 AU 
 T_jup = 2.873 
[ 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 9.40 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
diameter diameter 74.53 km 6.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
rotation period rot_per 18.476 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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 0.0553   0.011 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9

6090 (1989 DJ)          Discovered 1989-Feb-27 by Debehogne, H. at La Silla (809)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 DJ = 1977 EH2 = 1983 OH = 1990 FO1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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