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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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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2491836097953102 1.2223e-08  
a 3.177336497849608 1.4079e-08 au
q 2.385596319781054 3.8272e-08 au
i 1.027724097065803 8.397e-07 deg
node 24.43971636067474 2.9641e-05 deg
peri 304.0851505805576 2.9893e-05 deg
M 28.01190813799948 4.0666e-06 deg
tp 2459235.534265072074
(2021-Jan-21.03426507)
2.2783e-05 TDB
period 2068.67965897134
5.66
1.375e-05
3.765e-08
d
yr
n .1740240440025458 1.1567e-09 deg/d
Q 3.969076675918162 1.7587e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1990  
   data-arc span      31319 days (85.75 yr)  
   first obs. used      1935-09-28  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5065  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 13:31:05  

Additional Information
 Earth MOID = 1.37385 au 
 Jupiter MOID = 1.39821 au 
 T_jup = 3.151 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456560.5 (2013-Sep-25.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2494881824966936 1.2172e-08  
q 2.384024695161785 3.8262e-08 au
tp 2457171.407360658136
(2015-May-28.90736066)
1.9713e-05 TDB
node 24.53655485146612 2.9596e-05 deg
peri 304.8004290252667 2.9824e-05 deg
i 1.028856410543618 8.3956e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      1990  
   data-arc span      31319 days (85.75 yr)  
   first obs. used      1935-09-28  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5065  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 13:31:05  

Additional Information
 Jupiter MOID = 1.39821 au 
 T_jup = 3.151 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.481506353378208E-16 -4.482339219288111E-16 6.41482172044078E-14 -1.472018278106707E-13 1.573593397048478E-13 5.289655721854185E-15
q -4.482339219288111E-16 1.4640133793277E-15 -2.261843105046436E-13 4.707111308041668E-13 -5.090450589347743E-13 -1.703785611278623E-14
tp 6.41482172044078E-14 -2.261843105046436E-13 3.886016423418115E-10 -3.065159286443589E-11 1.293941591104484E-10 -1.857640010426747E-12
node -1.472018278106707E-13 4.707111308041668E-13 -3.065159286443589E-11 8.759121297361446E-10 -8.697401608868662E-10 -1.832124652316723E-11
peri 1.573593397048478E-13 -5.090450589347743E-13 1.293941591104484E-10 -8.697401608868662E-10 8.894864267352123E-10 1.758548982711959E-11
i 5.289655721854185E-15 -1.703785611278623E-14 -1.857640010426747E-12 -1.832124652316723E-11 1.758548982711959E-11 7.04865746262331E-13

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 12.75   n/a E2021B10  
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. 2020-October); 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1909-Oct-06 05:45 00:04 Jupiter 1.77753703425254 1.77753465807648 1.77753941041951 1.64814716543356 1.32791554563933 2418585.739568102 3.98230783289747 184.396919692255 21.8790574643741 -20.9246300576108 1295735.66016557 T 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
1920-Dec-03 05:22 00:03 Jupiter 1.55506782429904 1.5550664554464 1.55506919315653 1.01748089370405 n/a 2422661.723537138 2.95085189843507 153.611053631469 5.83462573166718 63.7008629424308 35738467.1352024 F 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
1932-Mar-11 18:08 00:02 Jupiter 1.43886335401377 1.43886294078513 1.43886376724348 0.799543806925132 n/a 2426778.255732814 2.06429239703855 66.3615704749641 4.25532000278247 72.2751933343872 48175989.9717264 F 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
1943-Jun-29 23:37 00:02 Jupiter 1.44238282455422 1.44238257163726 1.44238307747118 0.864175617999615 n/a 2430905.484325930 1.53391134740703 12.7684098600631 5.9027949488297 -10.1372554328214 17829528.7497891 F 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
1954-Sep-14 02:09 00:01 Jupiter 1.56787961365724 1.56787905619383 1.56788017112332 1.30709009769177 0.792474423746448 2434999.589438776 1.25988631573812 447.370141392801 17.4298887846539 -24.7447346920027 12249090.2774136 T 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
1965-Oct-02 02:36 00:01 Jupiter 1.81302638066962 1.81302578093086 1.81302698040817 2.46213986986898 2.2644554681746 2439035.608444180 1.01277677167589 19.0725162728763 3.70826663548595 -78.1618824561874 2851119.01976445 T 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
2064-Nov-09 04:53 00:01 Jupiter 1.94209770731486 1.94209699977277 1.94209841485661 2.25534217970167 2.05287419225544 2475233.703331234 1.08049381755165 15.5705658666626 2.59339305109193 -78.233805443093 2458619.37133842 T 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
2075-Dec-16 06:32 00:01 Jupiter 1.68990832064127 1.6899075506797 1.68990909060371 1.34220617285121 0.893906888445133 2479287.772015651 1.35442404799926 313.665449583508 34.9951474930824 -28.4694903272015 4758193.13195591 T 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
2087-Mar-03 21:47 00:02 Jupiter 1.51808403332143 1.51808345870714 1.51808460793756 0.915586286131557 n/a 2483383.407850951 1.6357654625725 89.4021237482643 5.31923255996661 71.6094852822862 40508495.7533649 F 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
2098-Jun-20 05:15 00:02 Jupiter 1.45336341034021 1.45336327863097 1.45336354204991 0.822664173899558 n/a 2487509.718793670 2.12129599439459 70.4812370033183 5.36426648643112 86.9089077430716 40459189.4378735 F 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
2109-Sep-29 14:20 00:03 Jupiter 1.49831113759403 1.49831026141474 1.49831201377336 0.996794681686638 n/a 2491628.096910236 3.0187638099961 45.1171320263416 6.14112783474585 -14.5803484939821 10359737.6777917 F 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
2120-Nov-23 15:49 00:04 Jupiter 1.66869637998626 1.66869427543374 1.66869848453082 1.65254028638552 1.30984682784106 2495701.158929936 4.24271133869614 286.373148330398 9.845064049881 -27.2828952134492 4668862.42533743 T 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32
2131-Dec-01 04:41 00:05 Jupiter 1.92966024081084 1.92965737179821 1.92966310982127 3.01976298887462 2.87072646346606 2499725.695159961 5.1362741276159 112.806643456033 8.00473564648957 -44.6726671496131 2854676.30091237 T 38 CATAB v2.0g-lin.ifort 2021-Jul-09 13:32:09 2021-Jul-09 13:32

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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