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6281 Strnad (1980 SD)
Classification: Main-belt Asteroid          SPK-ID: 2006281
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .17460386203276 4.1652e-08  
a 2.588946467357075 1.395e-08 au
q 2.136906415560459 1.0648e-07 au
i 12.63603399117024 5.0204e-06 deg
node 18.95733369135765 1.8199e-05 deg
peri 281.009100569562 2.9025e-05 deg
M 283.2743201052216 3.0658e-05 deg
tp 2459524.780831061009
(2021-Nov-06.28083106)
0.0001316 TDB
period 1521.538803462699
4.17
1.2298e-05
3.367e-08
d
yr
n .2366025757481284 1.9123e-09 deg/d
Q 3.04098651915369 1.6386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2096  
   data-arc span      17591 days (48.16 yr)  
   first obs. used      1972-11-08  
   last obs. used      2021-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47593  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:30:02  

Additional Information
 Earth MOID = 1.1635 au 
 Jupiter MOID = 2.32704 au 
 T_jup = 3.365 
[ 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 12.85   n/a E2021B10  

6281 Strnad           Discovered 1980 Sept. 16 by A. Mrkos at Klet.
Antonín Strnad (1747-1799) was the third director of the Klementinum observatory in Prague. The daily meteorological measurements he began in 1775 still continue today. He rescued the Gothic Astronomical Clock on the Prague Town Hall. The name was suggested by J. Ticha and M. Šolc.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1980 SD = 1972 VJ = 1976 SM5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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