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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 ]

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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4493679361422285 1.1646e-07  
a 1.83740015580404 3.0851e-09 au
q 1.01173143992297 2.1363e-07 au
i 41.10383241740566 2.555e-05 deg
node 324.3840591532287 3.9142e-06 deg
peri 215.0160383072323 5.9928e-05 deg
M 320.6926241959295 1.9453e-05 deg
tp 2459099.828894125380
(2020-Sep-07.32889413)		 4.9243e-05 TDB
period 909.7122652851796
2.49		 2.2912e-06
6.273e-09		 d
yr
n .3957295221111986 9.9667e-10 deg/d
Q 2.663068871685111 4.4714e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32942  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-21 06:22:25  

Additional Information
 Earth MOID = .0807946 au 
 Jupiter MOID = 2.55105 au 
 T_jup = 3.632 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456895.5 (2014-Aug-26.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4495293622251804 1.1634e-07  
q 1.011528950290772 2.1366e-07 au
tp 2457280.350625928630
(2015-Sep-14.85062593)		 4.7962e-05 TDB
node 324.4064197653606 3.9141e-06 deg
peri 214.9835560345134 5.9903e-05 deg
i 41.11232401635886 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32942  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-21 06:22:25  

Additional Information
 Jupiter MOID = 2.55105 au 
 T_jup = 3.632 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.353407674348632E-14 -2.485552823296292E-14 5.452262159792919E-12 -7.069750560886165E-14 6.901072166416677E-12 1.566472952838863E-12
q -2.485552823296292E-14 4.565007937281549E-14 -1.000976158935383E-11 1.295911032389638E-13 -1.267289822528121E-11 -2.875390408440917E-12
tp 5.452262159792919E-12 -1.000976158935383E-11 2.300311923338004E-9 5.491988347540276E-12 2.857137687303333E-9 5.436415504757961E-10
node -7.069750560886165E-14 1.295911032389638E-13 5.491988347540276E-12 1.53197941470278E-11 -1.512570909044354E-11 -1.792905464033838E-11
peri 6.901072166416677E-12 -1.267289822528121E-11 2.857137687303333E-9 -1.512570909044354E-11 3.588347746551626E-9 7.225614731860508E-10
i 1.566472952838863E-12 -2.875390408440917E-12 5.436415504757961E-10 -1.792905464033838E-11 7.225614731860508E-10 6.531589646854446E-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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