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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2497009808967311 1.2211e-08  
a 3.179628697145512 1.4191e-08 au
q 2.385672292580882 3.829e-08 au
i 1.027624180889481 8.3945e-07 deg
node 24.44644682190565 2.964e-05 deg
peri 304.1400082549936 2.989e-05 deg
M 353.8721240964671 3.9364e-06 deg
tp 2459235.750923560086
(2021-Jan-21.25092356)
2.2769e-05 TDB
period 2070.918648061164
5.67
1.3864e-05
3.796e-08
d
yr
n .1738358966138237 1.1638e-09 deg/d
Q 3.973585101710142 1.7735e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1978  
   data-arc span      31114 days (85.19 yr)  
   first obs. used      1935-09-28  
   last obs. used      2020-12-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5062  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:30:13  

Additional Information
 Earth MOID = 1.37275 au 
 Jupiter MOID = 1.39426 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 12.75   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 1.77753703585135 1.77753465755625 1.77753941413726 1.64814724323259 1.32791564252265 2418585.739577978 3.98598933916978 184.550669660015 21.882390401921 -20.919780845373 1295138.30957981 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
1920-Dec-03 05:22 00:03 Jupiter 1.55506782525132 1.55506645522173 1.55506919528578 1.0174808988035 n/a 2422661.723538945 2.95358498342574 153.75171609143 5.8353432475062 63.7023230849623 35734512.1646222 F 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
1932-Mar-11 18:08 00:02 Jupiter 1.43886335440293 1.43886294088242 1.4388637679245 0.799543816039055 n/a 2426778.255740363 2.06622479464628 66.4182778873675 4.25580186572065 72.2774779983086 48171131.5942552 F 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
1943-Jun-29 23:37 00:02 Jupiter 1.44238282463514 1.44238257150507 1.44238307776521 0.864175615587087 n/a 2430905.484327352 1.53537267255328 12.7792959962075 5.90283944174056 -10.1389903005267 17816605.8987858 F 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
1954-Sep-14 02:09 00:01 Jupiter 1.56787961357925 1.56787905564366 1.56788017151751 1.30709005600239 0.792474354950988 2434999.589444605 1.26109870906231 447.7820320245 17.4301089444705 -24.7449045161312 12248970.0111888 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
1965-Oct-02 02:36 00:01 Jupiter 1.81302638052989 1.81302578034066 1.8130269807188 2.4621397235563 2.26445530907309 2439035.608455881 1.01374492623347 19.0851816059497 3.70828461407281 -78.1632328111932 2850555.40925545 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
2064-Nov-09 04:53 00:01 Jupiter 1.94209770678784 1.94209699858515 1.9420984149902 2.25534212265966 2.05287412952992 2475233.703325842 1.08152970603318 15.579083729116 2.59358316706821 -78.2299031250107 2457444.66144406 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
2075-Dec-16 06:32 00:01 Jupiter 1.68990832004719 1.68990754932021 1.68990909077494 1.34220621183421 0.893906946781213 2479287.772020563 1.3557113745169 313.984927234408 34.995420578737 -28.4703149991372 4758076.9209834 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
2087-Mar-03 21:47 00:02 Jupiter 1.51808403275658 1.5180834575508 1.51808460796419 0.915586296259876 n/a 2483383.407853175 1.63729015631746 89.4878853381282 5.31967011350733 71.6075676864961 40504700.8325553 F 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
2098-Jun-20 05:15 00:02 Jupiter 1.45336341041298 1.45336327863583 1.4533635421906 0.822664179678827 n/a 2487509.718782373 2.12324457039793 70.5490850885325 5.36444920462365 86.9073256079984 40457750.7123348 F 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
2109-Sep-29 14:20 00:03 Jupiter 1.49831113914858 1.49831026221052 1.49831201608666 0.996794672236105 n/a 2491628.096909958 3.02153367902448 45.1566490318566 6.14129535308041 -14.5823291515125 10358625.6836946 F 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
2120-Nov-23 15:49 00:04 Jupiter 1.66869638345531 1.66869427695296 1.66869848994979 1.6525402315714 1.30984675949161 2495701.158932604 4.24662829081062 286.631664671743 9.84534277827699 -27.2823570620742 4668528.47493787 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30
2131-Dec-01 04:41 00:05 Jupiter 1.92966024557296 1.92965737385201 1.92966311729172 3.01976316844439 2.87072665273572 2499725.695143330 5.14104108019072 112.914469467315 8.00475833943214 -44.6726833731375 2854665.2336175 T 37 CATAB v2.0f-lin.ifort 2021-Apr-12 15:30:52 2021-Apr-12 15:30

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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