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72454 (2001 DR9)
Classification: Main-belt Asteroid          SPK-ID: 2072454
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1978319172769273 3.9207e-08  
a 3.087818407475769 2.2216e-08 au
q 2.476949371721849 1.1656e-07 au
i 16.20882414608645 4.0613e-06 deg
node .08965358460602689 1.3174e-05 deg
peri 248.8594748588294 1.7456e-05 deg
M 159.7460938161717 1.4973e-05 deg
tp 2458321.064887676637
(2018-Jul-21.56488768)
7.8146e-05 TDB
period 1981.874065732932
5.43
2.1389e-05
5.856e-08
d
yr
n .1816462540302053 1.9604e-09 deg/d
Q 3.698687443229689 2.6611e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1418  
   data-arc span      25210 days (69.02 yr)  
   first obs. used      1952-01-30  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46206  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:02:09  

Additional Information
 Earth MOID = 1.51803 au 
 Jupiter MOID = 1.60344 au 
 T_jup = 3.135 
[ show covariance matrix ]

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 13.72   n/a MPCxxxxx  
diameter diameter 5.333 km 1.929 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.271   0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72454 (2001 DR9)          Discovered 2001-Feb-16 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

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