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3270 Dudley (1982 DA)
Classification: Mars-crossing Asteroid          SPK-ID: 2003270
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3302674170401645 3.9193e-08  
a 2.148580969211056 5.8603e-09 au
q 1.438974682208068 8.2266e-08 au
i 27.68213099285158 3.5113e-06 deg
node 146.9188551272597 9.2223e-06 deg
peri 326.9260482989519 1.1912e-05 deg
M 136.8662035259088 1.1886e-05 deg
tp 2458763.159463004231
(2019-Oct-06.65946300)
3.6543e-05 TDB
period 1150.33945022573
3.15
4.7064e-06
1.289e-08
d
yr
n .3129511031977192 1.2804e-09 deg/d
Q 2.858187256214045 7.7958e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1745  
   data-arc span      14066 days (38.51 yr)  
   first obs. used      1982-02-18  
   last obs. used      2020-08-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39155  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:54:54  

Additional Information
 Earth MOID = .491065 au 
 Jupiter MOID = 2.32675 au 
 T_jup = 3.496 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457497.5 (2016-Apr-19.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3303409976011227 3.9227e-08  
q 1.438637220776633 8.2319e-08 au
tp 2457613.528223868532
(2016-Aug-13.02822387)
3.2976e-05 TDB
node 146.9492729024047 9.2214e-06 deg
peri 326.9683272685625 1.1901e-05 deg
i 27.68335122089341 3.5118e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1745  
   data-arc span      14066 days (38.51 yr)  
   first obs. used      1982-02-18  
   last obs. used      2020-08-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39155  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:54:54  

Additional Information
 Jupiter MOID = 2.32675 au 
 T_jup = 3.496 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.538757444608883E-15 -3.226463576480876E-15 6.30829242538387E-13 2.672820255061017E-15 8.222171514173949E-14 -8.705847076228408E-15
q -3.226463576480876E-15 6.776491856044456E-15 -1.261340494403667E-12 -4.58985632879258E-15 -1.570912965021809E-13 1.668213374560207E-14
tp 6.30829242538387E-13 -1.261340494403667E-12 1.087446182308237E-9 8.892767357553412E-12 2.637539564742025E-10 -2.376144523136294E-11
node 2.672820255061017E-15 -4.58985632879258E-15 8.892767357553412E-12 8.503492524452203E-11 -7.263230687892431E-11 4.527180314316453E-12
peri 8.222171514173949E-14 -1.570912965021809E-13 2.637539564742025E-10 -7.263230687892431E-11 1.416376208118017E-10 -1.031438885579599E-11
i -8.705847076228408E-15 1.668213374560207E-14 -2.376144523136294E-11 4.527180314316453E-12 -1.031438885579599E-11 1.233300657857118E-11

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 14.28   n/a E2021B10  
rotation period rot_per 4.047 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Koff, R.A. (2004) Minor Planet Bull. 31, 58-60.]

3270 Dudley (1982 DA)          Discovered 1982-Feb-18 by Shoemaker, C. and Bus, S. J. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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