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24644 (1985 DA)
Classification: Inner Main-belt Asteroid          SPK-ID: 2024644
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07384316790594955 4.4193e-08  
a 1.898840122206983 5.1964e-09 au
q 1.758623752236299 8.5263e-08 au
i 23.25608365483968 4.8982e-06 deg
node 155.9540674262045 8.4966e-06 deg
peri 5.365233055331139 2.4282e-05 deg
M 247.1901441563224 2.3076e-05 deg
tp 2459499.985341162059
(2021-Oct-12.48534116)
6.1439e-05 TDB
period 955.7207746789575
2.62
3.9231e-06
1.074e-08
d
yr
n .376679056831144 1.5462e-09 deg/d
Q 2.039056492177667 5.5801e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1287  
   data-arc span      13110 days (35.89 yr)  
   first obs. used      1985-02-24  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45963  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:45:48  

Additional Information
 Earth MOID = .768381 au 
 Jupiter MOID = 2.94391 au 
 T_jup = 3.847 
[ 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 15.90   n/a MPCxxxxx  

24644 (1985 DA)          Discovered 1985-Feb-24 by Helin, E. F. at Palomar
Reference: 20010606/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1985 DA = 1998 EQ16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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