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JPL Small-Body Database Browser
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9590 (1991 DK1)
Classification: Jupiter Trojan          SPK-ID: 2009590
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04046720141173919 5.0779e-08  
a 5.100948609798742 8.7218e-08 au
q 4.894527495015085 2.2907e-07 au
i 6.660834375560844 5.2812e-06 deg
node 28.84858260731951 4.3925e-05 deg
peri 192.7778474791421 8.1617e-05 deg
M 95.9674975160703 6.7315e-05 deg
tp 2457478.748862693628
(2016-Mar-31.24886269)
0.00079079 TDB
period 4207.991454217821
11.52
0.00010792
2.955e-07
d
yr
n .08555150454004821 2.1942e-09 deg/d
Q 5.307369724582398 9.0747e-08 au
  Orbit Determination Parameters
   # obs. used (total)      952  
   data-arc span      10501 days (28.75 yr)  
   first obs. used      1991-02-20  
   last obs. used      2019-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59448  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 22:53:32  

Additional Information
 Earth MOID = 3.88675 au 
 Jupiter MOID = .326867 au 
 T_jup = 2.985 
[ 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 12.0   n/a MPO253431  

9590 (1991 DK1)          Discovered 1991-Feb-21 by Spacewatch at Kitt Peak
Reference: 19981110/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 DK1 = 1996 RN28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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