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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1325249985228903 9.9648e-09  
a 2.566653282238542 7.7459e-09 au
q 2.226507559801108 2.84e-08 au
i 7.895506515980013 6.3329e-07 deg
node 5.482274866825857 2.1542e-06 deg
peri 145.7625575366255 6.4575e-06 deg
M 333.8657056785802 6.7309e-06 deg
tp 2459309.532887216537
(2021-Apr-05.03288722)
2.817e-05 TDB
period 1501.928420764063
4.11
6.799e-06
1.861e-08
d
yr
n .2396918488411454 1.0851e-09 deg/d
Q 2.906799004675976 8.7725e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2797  
   data-arc span      25635 days (70.18 yr)  
   first obs. used      1951-01-06  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42016  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:18:44  

Additional Information
 Earth MOID = 1.24116 au 
 Jupiter MOID = 2.08747 au 
 T_jup = 3.406 
[ 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 12.95   n/a E2021B10  
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. 2020-October); 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

[ show close-approach data ]
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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