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JPL Small-Body Database Browser
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3600 Archimedes (1978 SL7)
Classification: Main-belt Asteroid          SPK-ID: 2003600
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1325250227363177 3.8274e-08  
a 2.566265499958405 9.3375e-09 au
q 2.22617110622899 1.0032e-07 au
i 7.895656150407995 4.2783e-06 deg
node 5.488433283125095 2.1912e-05 deg
peri 145.8305258692517 2.5028e-05 deg
M 285.8575925276274 1.2017e-05 deg
tp 2459309.753759691811
(2021-Apr-05.25375969)
5.055e-05 TDB
period 1501.588055803784
4.11
8.1954e-06
2.244e-08
d
yr
n .239746179791831 1.3085e-09 deg/d
Q 2.90635989368782 1.0575e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2302  
   data-arc span      25232 days (69.08 yr)  
   first obs. used      1951-01-06  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44296  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:51:09  

Additional Information
 Earth MOID = 1.241 au 
 Jupiter MOID = 2.08862 au 
 T_jup = 3.407 
[ 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 12.9   n/a MPO400032  
diameter diameter 6.770 km 0.205 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.439 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Benishek, V. (2018) Minor Planet Bull. 45, 82-91.]
geometric albedo albedo 0.321   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3600 Archimedes (1978 SL7)          Discovered 1978-Sep-26 by Zhuravleva, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1978 SL7 = 1951 AU1 = 1980 EV = 1984 AG1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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