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3685 Derdenye (1981 EH14)
Classification: Main-belt Asteroid          SPK-ID: 2003685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1771924578000984 4.891e-08  
a 2.664257094317589 1.1392e-08 au
q 2.192170831564107 1.2732e-07 au
i 15.14776559250746 4.9215e-06 deg
node 202.7734902594987 1.3902e-05 deg
peri 183.4094951651235 1.7108e-05 deg
M 150.2892531295041 1.097e-05 deg
tp 2458337.386226628833
(2018-Aug-06.88622663)
4.7169e-05 TDB
period 1588.410038926166
4.35
1.0188e-05
2.789e-08
d
yr
n .2266417305215318 1.4537e-09 deg/d
Q 3.136343357071071 1.3411e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1921  
   data-arc span      22829 days (62.50 yr)  
   first obs. used      1957-11-27  
   last obs. used      2020-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4648  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:00:04  

Additional Information
 Earth MOID = 1.19642 au 
 Jupiter MOID = 2.31597 au 
 T_jup = 3.313 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5   n/a MPO502188  
diameter diameter 10.17 km 0.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
rotation period rot_per 12. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0817   0.014 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3

3685 Derdenye (1981 EH14)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 EH14 = 1957 WK1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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