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JPL Small-Body Database Browser
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4030 Archenhold (1984 EO1)
Classification: Main-belt Asteroid          SPK-ID: 2004030
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09318595511776256 3.7018e-08  
a 2.460025174109726 1.0605e-08 au
q 2.230785378646571 9.5386e-08 au
i 6.529761168708236 5.076e-06 deg
node 342.3437455015666 2.9253e-05 deg
peri 303.2029579619158 4.1586e-05 deg
M 287.2842553357655 2.807e-05 deg
tp 2458885.164761345921
(2020-Feb-05.66476135)		 0.00010931 TDB
period 1409.313960239706
3.86		 9.1133e-06
2.495e-08		 d
yr
n .2554434357116342 1.6518e-09 deg/d
Q 2.689264969572881 1.1593e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2006  
   data-arc span      23192 days (63.50 yr)  
   first obs. used      1955-11-11  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44704  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 00:08:05  

Additional Information
 Earth MOID = 1.22193 au 
 Jupiter MOID = 2.46054 au 
 T_jup = 3.475 
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Orbital Elements at Epoch 2456464.5 (2013-Jun-21.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0929205649597776 3.6597e-08  
q 2.23131325737226 9.4061e-08 au
tp 2456061.368710649142
(2012-May-13.86871065)		 0.00011655 TDB
node 342.4405642903715 2.9305e-05 deg
peri 302.0369654941708 4.1709e-05 deg
i 6.524433123310028 5.0712e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2006  
   data-arc span      23192 days (63.50 yr)  
   first obs. used      1955-11-11  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44704  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 00:08:05  

Additional Information
 Jupiter MOID = 2.46054 au 
 T_jup = 3.475 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.339352918509309E-15 -3.427320333577622E-15 1.850645156541696E-12 1.347944937728156E-15 4.894707629579936E-13 2.212575651416461E-16
q -3.427320333577622E-15 8.847538164577824E-15 -5.018450296663717E-12 -3.542134326049727E-15 -1.318453950676216E-12 -2.229434026396543E-16
tp 1.850645156541696E-12 -5.018450296663717E-12 1.358285642341116E-8 -8.085666935356897E-12 3.465370373861594E-9 -2.583848342250854E-12
node 1.347944937728156E-15 -3.542134326049727E-15 -8.085666935356897E-12 8.587821312589868E-10 -8.547199419139044E-10 1.446921657457001E-11
peri 4.894707629579936E-13 -1.318453950676216E-12 3.465370373861594E-9 -8.547199419139044E-10 1.739650438399386E-9 -1.504237539310325E-11
i 2.212575651416461E-16 -2.229434026396543E-16 -2.583848342250854E-12 1.446921657457001E-11 -1.504237539310325E-11 2.571691322732831E-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 13.1   n/a MPO384789  
diameter diameter 6.973 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.251   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4030 Archenhold           Discovered 1984 Mar. 2 by H. Debehogne at the European Southern Observatory.
Named in memory of the German astronomer Friedrich Simon Archenhold (1861-1939). In 1896 he made it possible to build the world's longest refractor (focal length 21 meters), which is still in use at the Archenhold Observatory in Berlin---Europe's first public observatory. As its first director Archenhold had the aim of introducing astronomy to everyone. Name suggested by A. Gnädig and A. Doppler and endorsed by L. D. Schmadel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1984 EO1 = 1970 SO = 1980 DP2 = 1980 ET 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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