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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05658044108718655 8.1537e-08  
a 5.312492432865464 1.4894e-07 au
q 5.011909267741595 4.2461e-07 au
i 20.17919674489635 1.172e-05 deg
node 328.5295018735216 1.8059e-05 deg
peri 72.95043582689647 0.00010076 deg
M 172.6171241842574 9.9833e-05 deg
tp 2455255.993881193041
(2010-Feb-28.49388119)
0.0012283 JED
period 4472.454320038507
12.24
0.00018808
5.149e-07
d
yr
n .08049271702721392 3.385e-09 deg/d
Q 5.613075597989333 1.5736e-07 au
  Orbit Determination Parameters
   # obs. used (total)      945  
   data-arc span      22543 days (61.72 yr)  
   first obs. used      1954-03-28  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46952  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:58:42  

Additional Information
 Earth MOID = 4.07717 au 
 Jupiter MOID = .00626634 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 LCDB (Rev. 2015-December); 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 0.0553   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
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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