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JPL Small-Body Database Browser
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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2048478503590946 2.9124e-06  
a 1.240966839029421 4.5508e-06 au
q .9867574496873234 5.386e-08 au
i 13.74330014359336 0.0001126 deg
node 161.916928044096 1.0346e-05 deg
peri 13.91936351269507 0.00013573 deg
M 39.79348544887938 0.0171 deg
tp 2458944.685354487046
(2020-Apr-05.18535449)
0.023677 TDB
period 504.9387395451017
1.38
0.0027775
7.604e-06
d
yr
n .7129577744902743 3.9218e-06 deg/d
Q 1.495176228371518 5.483e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .18908  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:01:10  

Additional Information
 Earth MOID = .000338554 au 
 Jupiter MOID = 3.46893 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. 2019-August); 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[Ryan, W. UNPUBLISHED]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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