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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 72 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3070852318713853 7.6012e-09  
a 1.460979555052287 2.8747e-09 au
q 1.012334309629702 1.0272e-08 au
i 7.914259970063459 1.4797e-06 deg
node 63.39465143182053 2.6963e-06 deg
peri 160.290838474334 8.6959e-06 deg
M 329.972685010888 4.4826e-06 deg
tp 2459450.299548822637
(2021-Aug-23.79954882)
8.1299e-06 TDB
period 645.0073069527562
1.77
1.9037e-06
5.212e-09
d
yr
n .5581332120108343 1.6473e-09 deg/d
Q 1.909624800474872 3.7574e-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 = .0125834 au 
 Jupiter MOID = 3.07013 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 = 3.07013 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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