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20760 Chanmatchun (2000 DR8)
Classification: Main-belt Asteroid          SPK-ID: 2020760
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1627137359072665 2.5524e-08  
a 2.419652775754018 7.3403e-09 au
q 2.025942033012695 6.2423e-08 au
i 7.364752550008775 4.511e-06 deg
node 35.92197136154367 2.3106e-05 deg
peri 266.9164208752385 2.7582e-05 deg
M 30.12574931015619 1.5307e-05 deg
tp 2458885.456163391528
(2020-Feb-05.95616339)
5.8394e-05 TDB
period 1374.763520490682
3.76
6.2558e-06
1.713e-08
d
yr
n .2618632183893768 1.1916e-09 deg/d
Q 2.813363518495342 8.5347e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2337  
   data-arc span      17914 days (49.05 yr)  
   first obs. used      1971-10-11  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43983  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:00:49  

Additional Information
 Earth MOID = 1.02714 au 
 Jupiter MOID = 2.4407 au 
 T_jup = 3.485 
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Orbital Elements at Epoch 2457150.5 (2015-May-08.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1622775152160027 2.5538e-08  
q 2.027257731711977 6.2426e-08 au
tp 2457511.574118889189
(2016-May-03.07411889)
5.837e-05 TDB
node 35.95478751538863 2.3091e-05 deg
peri 267.1729101549696 2.759e-05 deg
i 7.366989569362429 4.5119e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2337  
   data-arc span      17914 days (49.05 yr)  
   first obs. used      1971-10-11  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43983  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:00:49  

Additional Information
 Jupiter MOID = 2.4407 au 
 T_jup = 3.485 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.522102527388149E-16 -1.586597030297676E-15 4.269502863076003E-13 -2.62470606144369E-15 1.180060330310406E-13 5.909471712182537E-16
q -1.586597030297676E-15 3.897026539159163E-15 -1.039035217784947E-12 6.162628837241472E-15 -2.888061089719067E-13 -1.279807269630848E-15
tp 4.269502863076003E-13 -1.039035217784947E-12 3.40707714625709E-9 -8.150464252855911E-12 8.879393970650802E-10 -6.7969620043153E-13
node -2.62470606144369E-15 6.162628837241472E-15 -8.150464252855911E-12 5.332006525460427E-10 -5.305762936008275E-10 -3.128295085453975E-11
peri 1.180060330310406E-13 -2.888061089719067E-13 8.879393970650802E-10 -5.305762936008275E-10 7.612061376588315E-10 3.089838532288541E-11
i 5.909471712182537E-16 -1.279807269630848E-15 -6.7969620043153E-13 -3.128295085453975E-11 3.089838532288541E-11 2.035757862795338E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO474039  
diameter diameter 3.603 km 0.265 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.140   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

20760 Chanmatchun           Discovered 2000 Feb. 27 by W. K. Y. Yeung at Rock Finder Observatory.
Mat Chun Chan (b. 1934) is the discoverer's mother, and this minor planet is named for her unconditional love.
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
 2000 DR8 = 1971 TM3 = 1990 UE13 = 1998 XD45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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