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(2009 DL46)
Classification: Apollo [NEO, PHA]          SPK-ID: 3449054
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 72 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3071512933028128 7.6222e-09  
a 1.460915581529049 2.829e-09 au
q 1.012193471256171 1.0357e-08 au
i 7.915753887751484 1.4804e-06 deg
node 63.40332074738616 2.6954e-06 deg
peri 160.2918815636582 8.6812e-06 deg
M 220.5709213573637 4.2856e-06 deg
tp 2459450.296854479067
(2021-Aug-23.79685448)
8.1266e-06 TDB
period 644.9649419469462
1.77
1.8734e-06
5.129e-09
d
yr
n .5581698734093566 1.6213e-09 deg/d
Q 1.909637691801928 3.698e-09 au
  Orbit Determination Parameters
   # obs. used (total)      467  
   # delay obs. used      5  
   # Doppler obs. used      2  
   data-arc span      2660 days (7.28 yr)  
   first obs. used      2009-02-28  
   last obs. used      2016-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40507  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 02:36:49  

Additional Information
 Earth MOID = .010862 au 
 Jupiter MOID = 3.07129 au 
 T_jup = 4.561 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456902.5 (2014-Sep-02.0) TDB
Reference: JPL 72 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3052512115234966 7.4108e-09  
q 1.011618199686786 1.0549e-08 au
tp 2456873.299174243797
(2014-Aug-03.79917424)
6.5159e-06 TDB
node 63.51278258166295 2.6947e-06 deg
peri 159.7853563159666 8.7095e-06 deg
i 7.919774533801983 1.4846e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      467  
   # delay obs. used      5  
   # Doppler obs. used      2  
   data-arc span      2660 days (7.28 yr)  
   first obs. used      2009-02-28  
   last obs. used      2016-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40507  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 02:36:49  

Additional Information
 Jupiter MOID = 3.07129 au 
 T_jup = 4.561 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.492008357085881E-17 -7.774970980302299E-17 -4.606208816136925E-14 5.096098510565708E-15 -5.535016947202235E-14 -6.560289636251397E-15
q -7.774970980302299E-17 1.112859342001995E-16 6.476048930343844E-14 -7.322064147586327E-15 7.926804973415178E-14 9.470136100056947E-15
tp -4.606208816136925E-14 6.476048930343844E-14 4.245669957403665E-11 -9.137458951640026E-12 5.446523311051381E-11 5.132895235522651E-12
node 5.096098510565708E-15 -7.322064147586327E-15 -9.137458951640026E-12 7.261196609727906E-12 -1.665094560897091E-11 -6.471785105871438E-13
peri -5.535016947202235E-14 7.926804973415178E-14 5.446523311051381E-11 -1.665094560897091E-11 7.585514209246994E-11 6.484141482001247E-12
i -6.560289636251397E-15 9.470136100056947E-15 5.132895235522651E-12 -6.471785105871438E-13 6.484141482001247E-12 2.204093575549093E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 22.0   n/a MPO386802  
rotation period rot_per 42.26 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. (2016) Minor Planet Bull. 43, 311-319.]

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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