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305459 (2008 DU18)
Classification: Main-belt Asteroid          SPK-ID: 2305459
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1184886589431088 6.7084e-08  
a 3.104625813508351 3.2057e-08 au
q 2.736762864345588 2.085e-07 au
i 7.403177733362534 6.5959e-06 deg
node 154.7444173993033 5.3787e-05 deg
peri 84.84722026135755 6.3364e-05 deg
M 1.281147316035874 2.8981e-05 deg
tp 2458993.389356696134
(2020-May-23.88935670)
0.00016087 TDB
period 1998.077471147042
5.47
3.0947e-05
8.473e-08
d
yr
n .1801731940820762 2.7906e-09 deg/d
Q 3.472488762671113 3.5855e-08 au
  Orbit Determination Parameters
   # obs. used (total)      194  
   data-arc span      8477 days (23.21 yr)  
   first obs. used      1997-02-11  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67014  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 19:59:41  

Additional Information
 Earth MOID = 1.73772 au 
 Jupiter MOID = 1.58538 au 
 T_jup = 3.197 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457455.5 (2016-Mar-08.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1176336048176209 6.7041e-08  
q 2.740835821278496 2.0825e-07 au
tp 2456991.764642204357
(2014-Nov-30.26464220)
0.00017091 TDB
node 154.770732243437 5.3784e-05 deg
peri 84.36144703223844 6.3498e-05 deg
i 7.402150909138766 6.5957e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      194  
   data-arc span      8477 days (23.21 yr)  
   first obs. used      1997-02-11  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67014  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 19:59:41  

Additional Information
 Jupiter MOID = 1.58538 au 
 T_jup = 3.197 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.49453150473285E-15 -1.383070239734156E-14 -2.175894153000072E-13 4.457266084856273E-15 1.30091183775094E-13 -7.114584684703737E-15
q -1.383070239734156E-14 4.3368607148946E-14 -1.046958722441034E-12 -4.492479007044728E-15 -7.123908803596868E-13 2.574017520996728E-14
tp -2.175894153000072E-13 -1.046958722441034E-12 2.920971510588986E-8 -3.725066786949466E-11 5.824465010668471E-9 -3.530322148167074E-12
node 4.457266084856273E-15 -4.492479007044728E-15 -3.725066786949466E-11 2.89266891567404E-9 -2.874180760357521E-9 1.236001234724958E-10
peri 1.30091183775094E-13 -7.123908803596868E-13 5.824465010668471E-9 -2.874180760357521E-9 4.032017041888424E-9 -1.229705522688203E-10
i -7.114584684703737E-15 2.574017520996728E-14 -3.530322148167074E-12 1.236001234724958E-10 -1.229705522688203E-10 4.350283606759573E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO433968  

305459 (2008 DU18)          Discovered 2008-Feb-27 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2008 DU18 = 2005 TU88 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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