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4730 Xingmingzhou (1980 XZ)
Classification: Main-belt Asteroid          SPK-ID: 2004730
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04414599835855663 2.1706e-08  
a 3.124150013059784 1.6535e-08 au
q 2.986231291711362 7.3269e-08 au
i 11.98487784730314 6.0075e-07 deg
node 80.56994669628288 4.9082e-06 deg
peri 206.4800281194437 1.9493e-05 deg
M 266.3167365950216 2.2587e-05 deg
tp 2459921.374840693872
(2022-Dec-07.87484069)
0.00012701 TDB
period 2016.955171949664
5.52
1.6013e-05
4.384e-08
d
yr
n .1784868622796463 1.417e-09 deg/d
Q 3.262068734408206 1.7265e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2729  
   data-arc span      32659 days (89.42 yr)  
   first obs. used      1932-01-28  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40765  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:22:39  

Additional Information
 Earth MOID = 1.97415 au 
 Jupiter MOID = 1.82642 au 
 T_jup = 3.180 
[ 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 11.46   n/a MPO614063  
diameter diameter 24.628 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.396 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Tan, H.; Gao, X. (2019) Minor Planet Bull. 46, 82-84.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.104   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4730 Xingmingzhou           Discovered 1980 Dec. 7 at the Purple Mountain Observatory.
Xing-Ming Zhou (1965-2004), a meteorologist and comet hunter from Xinjiang province, detected 64 near-sun comets in SOHO's LASCO images and one in SOHO's SWAN images. He also independently discovered two other comets. A tireless and precise observer, he chronicled his observations on the Silk Road Astronomy website.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040928/MPCPages.arcLast Updated: 2004-09-28

[ 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
1942-Oct-30 13:25 00:02 Jupiter 1.96437897546528 1.96437829807933 1.9643796528537 3.96403706476104 3.85372649196964 2430663.058951460 1.68831089958681 120.108490597514 7.05860805018853 -73.788158864032 9757939.17483092 T 43 CATAB v2.0g-lin.ifort 2021-Jul-07 23:23:43 2021-Jul-07 23:23
1953-Feb-19 05:42 00:01 Jupiter 1.83125263614345 1.8312523930858 1.8312528792011 3.85825933838048 3.73645429167829 2434427.737452679 1.45810103542517 27.0184511392979 11.2284435188587 -82.1374633695086 13259016.3611568 T 43 CATAB v2.0g-lin.ifort 2021-Jul-07 23:23:43 2021-Jul-07 23:23
2025-May-18 17:04 < 00:01 Jupiter 1.88276909026759 1.88276884283382 1.88276933770147 3.99386630681727 3.87958832576763 2460814.211416758 0.274531166865846 29.6146587659215 6.86350783451851 -72.1128680753061 10021973.3083772 T 43 CATAB v2.0g-lin.ifort 2021-Jul-07 23:23:43 2021-Jul-07 23:23
2035-Sep-01 12:35 < 00:01 Jupiter 1.88075285750448 1.88075262668412 1.88075308832506 3.75155301447338 3.62952103510588 2464572.024119311 0.557946292139658 36.7638538251236 6.05712006788425 -75.2098506184003 10217350.9675879 T 43 CATAB v2.0g-lin.ifort 2021-Jul-07 23:23:43 2021-Jul-07 23:23
2107-Dec-05 22:30 00:02 Jupiter 1.83093950017002 1.8309391897422 1.83093981059981 3.99252726263461 3.87492468105558 2490964.437313805 2.20442059692485 124.312695814772 8.42786874704689 -84.6419173654284 9378600.85901024 T 43 CATAB v2.0g-lin.ifort 2021-Jul-07 23:23:43 2021-Jul-07 23:23
2118-Mar-10 02:53 00:03 Jupiter 1.95642545422389 1.95642460654752 1.95642630191159 3.6761926591598 3.55647362162873 2494711.619956938 2.64997839359168 245.611085222328 6.14078773850012 -79.912924781156 11968262.6173217 T 43 CATAB v2.0g-lin.ifort 2021-Jul-07 23:23:43 2021-Jul-07 23:23
2180-Mar-02 23:55 00:04 Jupiter 1.98077183661949 1.98077028978607 1.9807733834654 3.84411288722598 3.7312141434418 2517350.496734119 3.94223381124289 265.768971837351 7.4434412529476 -72.6580888864938 9084575.84000135 T 43 CATAB v2.0g-lin.ifort 2021-Jul-07 23:23:43 2021-Jul-07 23:23
2190-Jun-23 15:37 00:04 Jupiter 1.82715913358395 1.82715875834409 1.82715950882453 3.96615136802049 3.84749395342561 2521115.151036973 4.19318463835073 86.1358376773056 12.3447434061258 79.6834078305648 10184869.5230942 T 43 CATAB v2.0g-lin.ifort 2021-Jul-07 23:23:43 2021-Jul-07 23:23

Alternate Designations
 1980 XZ = 1932 BE = 1983 GR2 = 1983 JJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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