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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 
[ 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 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1941-Feb-05 14:12 < 00:01 Earth 0.491806849286604 0.491806617869341 0.491807080779795 13.9852495778096 13.9848621831959 2430031.091561701 0.170134572154273 1125.12004597158 11.1103292267039 89.8408116390581 6349934.00705482 T 33 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:12 2021-Apr-12 14:55
2004-Feb-05 12:39 < 00:01 Earth 0.492271118158348 0.492270855258676 0.49227138105802 14.0500382923478 14.0496530478481 2453041.027044553 0.0344183479895916 177.509938989064 13.1097253939808 89.9943374041002 5404493.78246391 T 33 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:12 2021-Apr-12 14:55
2067-Feb-04 21:25 < 00:01 Earth 0.495092587531008 0.495092272450502 0.495092902995211 14.1069509391646 14.106569435557 2476051.392095639 0.140289272995061 932.644905473528 10.6252884290517 89.2880995575311 6711736.71663535 T 33 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:12 2021-Apr-12 14:55
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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