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7458 (1984 DE1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2007458
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736757899589443 7.3765e-08  
a 3.730334968347452 5.8764e-08 AU
q 3.082466095908235 3.0024e-07 AU
i 1.767818319801763 7.0391e-06 deg
node 323.6146815033829 0.00020358 deg
peri 239.2073497025032 0.00020422 deg
M 19.43080283910076 2.0279e-05 deg
tp 2456858.460734370607
(2014-Jul-19.96073437)
0.00014567 JED
period 2631.601794841121
7.20
6.2183e-05
1.702e-07
d
yr
n .1367988123072907 3.2325e-09 deg/d
Q 4.37820384078667 6.8969e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1334  
   data-arc span      13968 days (38.24 yr)  
   first obs. used      1977-03-25  
   last obs. used      2015-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47787  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:56:54  

Additional Information
 Earth MOID = 2.0812 AU 
 T_jup = 3.062 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.8 mag n/a MPO319178  
rotation period rot_per 16.7 h n/a LCDB (Rev. 2015-May); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]

7458 (1984 DE1)          Discovered 1984-Feb-28 by Debehogne, H. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1984 DE1 = 1977 FL3 = 1977 GQ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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