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JPL Small-Body Database Browser
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26375 (1999 DE9)
Classification: TransNeptunian Object          SPK-ID: 2026375
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4168864836938099 1.7548e-05  
a 55.51033381606932 0.0021442 au
q 32.36882594281859 0.00030822 au
i 7.629438886380306 4.1069e-05 deg
node 323.0707302859254 0.00024385 deg
peri 159.8834258783413 0.0017786 deg
M 28.73881712928573 0.0022494 deg
tp 2446541.103528503923
(1986-Apr-20.60352850)
0.25377 TDB
period 151063.3757196146
413.59
8.7526
0.02396
d
yr
n .002383105754687939 1.3808e-07 deg/d
Q 78.65184168932005 0.003038 au
  Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      10659 days (29.18 yr)  
   first obs. used      1990-01-29  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .43599  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 00:57:37  

Additional Information
 Earth MOID = 31.3859 au 
 Jupiter MOID = 27.0813 au 
 T_jup = 5.979 
[ 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 4.9   n/a MPO384975  
rotation period rot_per 24. h n/a LCDB (Rev. 2019-January); Warner et al., 2009 [lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong.]

26375 (1999 DE9)          Discovered 1999-Feb-20 by Trujillo, C. A., Luu, J. at Kitt Peak
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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