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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09320071931735539 3.3786e-08  
a 2.460507456749403 9.953e-09 au
q 2.231186391894641 8.6831e-08 au
i 6.531080187130268 4.8488e-06 deg
node 342.2966036072638 2.7767e-05 deg
peri 302.80481662 4.0551e-05 deg
M 29.82246265358841 2.7695e-05 deg
tp 2458883.717852340943
(2020-Feb-04.21785234)
0.00010869 TDB
period 1409.728420003636
3.86
8.5537e-06
2.342e-08
d
yr
n .2553683354124843 1.5495e-09 deg/d
Q 2.689828521604164 1.0881e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2253  
   data-arc span      23642 days (64.73 yr)  
   first obs. used      1955-11-11  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43429  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:10:38  

Additional Information
 Earth MOID = 1.22304 au 
 Jupiter MOID = 2.45894 au 
 T_jup = 3.475 
[ 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 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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