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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1773707316308341 2.3286e-08  
a 2.663835084617503 1.0576e-08 au
q 2.191348706715012 6.151e-08 au
i 15.14954423777417 2.791e-07 deg
node 202.7729018367515 1.5671e-06 deg
peri 183.3849982273017 4.0429e-06 deg
M 195.6555080075454 7.4855e-06 deg
tp 2459925.456722256231
(2022-Dec-11.95672226)
3.5874e-05 TDB
period 1588.032655358024
4.35
9.457e-06
2.589e-08
d
yr
n .2266955901601642 1.35e-09 deg/d
Q 3.136321462519995 1.2452e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2008  
   data-arc span      23124 days (63.31 yr)  
   first obs. used      1957-11-27  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46789  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:09:18  

Additional Information
 Earth MOID = 1.19434 au 
 Jupiter MOID = 2.31719 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 159.866 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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