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(2009 DD45)
Classification: Apollo [NEO]          SPK-ID: 3448992
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2049504357373082 2.9229e-06  
a 1.240959869892356 4.5647e-06 au
q .9866246038254043 5.3735e-08 au
i 13.74465400550147 0.00011235 deg
node 161.9113449490519 1.3563e-05 deg
peri 13.93877853347558 0.00013927 deg
M 182.3594447836711 0.017887 deg
tp 2459449.657895683077
(2021-Aug-23.15789568)
0.026463 TDB
period 504.9344860281251
1.38
0.002786
7.628e-06
d
yr
n .7129637803743668 3.9338e-06 deg/d
Q 1.495295135959307 5.5003e-06 au
  Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      7 days  
   first obs. used      2009-02-27  
   last obs. used      2009-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .18822  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 02:36:47  

Additional Information
 Earth MOID = 8.54584E-6 au 
 Jupiter MOID = 3.46782 au 
 T_jup = 5.122 
[ show covariance matrix ]

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 25.8   n/a MPO156189  
rotation period rot_per 1.2 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Incomplete or inconclusive result.
Published Reference List:
[Ryan, W. UNPUBLISHED]
SMASSII spectral type spec_B S   n/a Binzel et al., IAUC 9024, March 4, 2009 Asumed albedo of 0.36 gives diameter of 19 +/- 4 meters

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