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3746 Heyuan (1964 TC1)
Classification: Main-belt Asteroid          SPK-ID: 2003746
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2498409995550145 3.7546e-08  
a 3.17920149519975 1.5239e-08 au
q 2.384906615852248 1.2262e-07 au
i 1.02771200482083 4.4522e-06 deg
node 24.48303940748677 0.00020346 deg
peri 304.2392225903181 0.00020361 deg
M 319.0218373954507 8.3119e-06 deg
tp 2459236.181497272833
(2021-Jan-21.68149727)
4.845e-05 TDB
period 2070.501301803137
5.67
1.4887e-05
4.076e-08
d
yr
n .1738709363217917 1.2501e-09 deg/d
Q 3.973496374547253 1.9046e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1948  
   data-arc span      31040 days (84.98 yr)  
   first obs. used      1935-09-28  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:57:37  

Additional Information
 Earth MOID = 1.37395 au 
 Jupiter MOID = 1.39461 au 
 T_jup = 3.150 
[ 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 12.7   n/a MPO435734  
diameter diameter 15.202 km 0.640 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 16.3010 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.070   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3746 Heyuan           Discovered 1964 Oct. 8 at the Purple Mountain Observatory.
The city of Heyuan is located in the Chinese northeastern province of Guangdong. Its Evergreen Lake is very famous, and the wealth of fossil dinosaur eggs discovered in Heyuan in 1996 has important scientific value.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1964 TC1 = 1935 SD2 = 1976 YM5 = 1981 RS4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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