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8001 Ramsden (1986 TR3)
Classification: Main-belt Asteroid          SPK-ID: 2008001
[ 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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1637556735945573 2.8539e-08  
a 3.139218749650729 1.3825e-08 au
q 2.62515386874101 8.8289e-08 au
i .6780197862355165 3.4637e-06 deg
node 8.414597105755529 0.00028204 deg
peri 290.9017843394233 0.00028225 deg
M 120.734102821825 1.0948e-05 deg
tp 2458519.168834781855
(2019-Feb-04.66883478)		 6.0925e-05 TDB
period 2031.565346872261
5.56		 1.3421e-05
3.674e-08		 d
yr
n .1772032588340048 1.1706e-09 deg/d
Q 3.653283630560448 1.6089e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2292  
   data-arc span      18756 days (51.35 yr)  
   first obs. used      1969-09-13  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48902  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:40:45  

Additional Information
 Earth MOID = 1.60759 au 
 Jupiter MOID = 1.5682 au 
 T_jup = 3.190 
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[ 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 13.24   n/a E2021B10  
diameter diameter 13.397 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8001 Ramsden           Discovered 1986 Oct. 4 by A. Mrkos at Klet.
Jesse Ramsden (1735-1800) was the British designer and producer of highly accurate sextants, theodolites and other instruments. Piazzi discovered (1) Ceres using the Ramsden vertical circle of the Palermo Observatory. The name was suggested by J. Ticha on seeing this instrument during the Asteroids 2001 conference.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1986 TR3 = 1969 RQ1 = 1981 XC1 = 1991 RK12 
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