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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04411195396928527 3.3259e-08  
a 3.125125595865812 1.9108e-08 au
q 2.987270199432744 1.0492e-07 au
i 11.98558635956388 4.2344e-06 deg
node 80.58217836663472 1.9828e-05 deg
peri 205.9608638577293 5.7472e-05 deg
M 196.1874577068479 5.5311e-05 deg
tp 2459918.714803914433
(2022-Dec-05.21480391)
0.00031144 TDB
period 2017.900001928083
5.52
1.8507e-05
5.067e-08
d
yr
n .1784032903791187 1.6362e-09 deg/d
Q 3.26298099229888 1.9951e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2242  
   data-arc span      32418 days (88.76 yr)  
   first obs. used      1932-01-28  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43535  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:49:10  

Additional Information
 Earth MOID = 1.97522 au 
 Jupiter MOID = 1.82683 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 11.4   n/a MPO384796  
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. 2019-August); 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.]
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 1.96437901868537 1.96437816522001 1.96437987215397 3.96403707130256 3.85372650054208 2430663.058858591 1.92396197185895 143.123776861167 12.3991259394477 -73.4703459891825 4245101.35536861 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 03:49:15 2020-Nov-13 03:49
1953-Feb-19 05:42 00:02 Jupiter 1.83125263496973 1.83125219574288 1.83125307419668 3.8582600770013 3.73645505361427 2434427.737389002 1.66201666770009 89.9084839029688 19.2747202293398 -85.0629657881138 3458479.94524703 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 03:49:15 2020-Nov-13 03:49
2025-May-18 17:04 < 00:01 Jupiter 1.8827691719474 1.88276882299392 1.88276952090099 3.99386653827315 3.87958856843143 2460814.211413548 0.348247980962991 54.5006333081889 13.0831091275884 -80.835780109309 3945978.53596575 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 03:49:15 2020-Nov-13 03:49
2035-Sep-01 12:35 < 00:01 Jupiter 1.88075281621601 1.88075235628545 1.88075327614677 3.7515540020161 3.62952205244231 2464572.024157542 0.650248874338585 110.290158116442 18.9724766855634 -85.0102360666519 3461583.51195517 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 03:49:15 2020-Nov-13 03:49
2107-Dec-05 22:30 00:03 Jupiter 1.8309395964079 1.83093916241127 1.8309400304062 3.99252784090702 3.87492528249404 2490964.437571845 2.51813934435232 151.251927561253 15.0293768765622 -85.0137840609187 3620188.76713057 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 03:49:15 2020-Nov-13 03:49
2118-Mar-10 02:53 00:03 Jupiter 1.95642527683632 1.95642426882761 1.95642628485727 3.67619379629022 3.55647478532753 2494711.620326013 3.02685622304966 289.344354905249 21.8516716733359 -80.8213564626803 3500835.01930591 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 03:49:15 2020-Nov-13 03:49
2180-Mar-02 23:55 00:05 Jupiter 1.98077202773143 1.98077029032208 1.98077376515723 3.8441127108236 3.7312139721264 2517350.496790715 4.49919753984073 305.917437242781 12.395506822651 -73.1469685807664 4124350.06487083 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 03:49:15 2020-Nov-13 03:49
2190-Jun-23 15:37 00:05 Jupiter 1.82715916427677 1.82715862066595 1.8271597078879 3.96615210832898 3.84749471792369 2521115.151014795 4.7812113054201 124.378643760662 25.6328677829709 85.5647051924152 3481309.27722791 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 03:49:15 2020-Nov-13 03:49

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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