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523625 (2008 DG17)
Classification: Apollo [NEO]          SPK-ID: 2523625
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4495098951511115 1.171e-07  
a 1.837900660431836 3.0393e-09 au
q 1.011746127262963 2.1537e-07 au
i 41.10757650350485 2.5553e-05 deg
node 324.3815380698751 3.9133e-06 deg
peri 215.0522507799998 5.9826e-05 deg
M 117.3189045371191 1.9498e-05 deg
tp 2459099.916506871667
(2020-Sep-07.41650687)
4.9259e-05 TDB
period 910.0839966709584
2.49
2.2575e-06
6.181e-09
d
yr
n .3955678830930573 9.8122e-10 deg/d
Q 2.664055193600709 4.4055e-09 au
  Orbit Determination Parameters
   # obs. used (total)      274  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      3742 days (10.25 yr)  
   first obs. used      2008-02-29  
   last obs. used      2018-05-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .32933  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 19:23:20  

Additional Information
 Earth MOID = .081601 au 
 Jupiter MOID = 2.54946 au 
 T_jup = 3.631 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456895.5 (2014-Aug-26.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .449529360680335 1.1634e-07  
q 1.011528953130143 2.1366e-07 au
tp 2457280.350625513713
(2015-Sep-14.85062551)
4.7962e-05 TDB
node 324.4064197704796 3.914e-06 deg
peri 214.9835554293323 5.9903e-05 deg
i 41.11232327863013 2.5557e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      274  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      3742 days (10.25 yr)  
   first obs. used      2008-02-29  
   last obs. used      2018-05-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .32933  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 19:23:20  

Additional Information
 Jupiter MOID = 2.54946 au 
 T_jup = 3.631 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.353427296778959E-14 -2.485589121553637E-14 5.452357867940382E-12 -7.068660030006598E-14 6.901170333160839E-12 1.566434481083898E-12
q -2.485589121553637E-14 4.565075078055869E-14 -1.000993845357479E-11 1.295710851125277E-13 -1.267307987085668E-11 -2.875320055012603E-12
tp 5.452357867940382E-12 -1.000993845357479E-11 2.300357498693133E-9 5.496459926631254E-12 2.857185861492509E-9 5.436272039439209E-10
node -7.068660030006598E-14 1.295710851125277E-13 5.496459926631254E-12 1.531973543698518E-11 -1.512002370679127E-11 -1.792772840865387E-11
peri 6.901170333160839E-12 -1.267307987085668E-11 2.857185861492509E-9 -1.512002370679127E-11 3.5883967838949E-9 7.225410121200462E-10
i 1.566434481083898E-12 -2.875320055012603E-12 5.436272039439209E-10 -1.792772840865387E-11 7.225410121200462E-10 6.531484740864441E-10

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 19.6   n/a MPO437959  
rotation period rot_per 3.643 h n/a LCDB (Rev. 2020-October); 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:
[Warner, B.D. (2018) Minor Planet Bull. 45, 248-256.]

523625 (2008 DG17)          Discovered 2008-Feb-29 by CSS at Catalina
Reference: Last Updated: 2018-10-01

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