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JPL Small-Body Database Browser
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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04411195445748979 3.3309e-08  
a 3.125125596001561 1.9379e-08 au
q 2.987270198036804 1.0502e-07 au
i 11.98558602017325 4.2988e-06 deg
node 80.58218052881575 2.035e-05 deg
peri 205.9608625337863 5.8703e-05 deg
M 196.1874568657121 5.6223e-05 deg
tp 2459918.714808689061
(2022-Dec-05.21480869)
0.00031628 TDB
period 2017.900002059564
5.52
1.877e-05
5.139e-08
d
yr
n .1784032903674945 1.6594e-09 deg/d
Q 3.262980993966317 2.0234e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2111  
   data-arc span      32118 days (87.93 yr)  
   first obs. used      1932-01-28  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44569  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:41:39  

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 1.96437900951282 1.96437814565765 1.96437987337135 3.96403703223986 3.85372645983878 2430663.058862180 1.94521108479272 144.856930714907 12.4457667422722 -73.4633432133346 4227257.70154196 T 32 CATAB v2.0f-lin.ifort 2020-Jan-28 19:42:00 2020-Jan-28 19:42
1953-Feb-19 05:42 00:02 Jupiter 1.83125263886007 1.83125219614085 1.8312530815794 3.8582600027004 3.73645497715422 2434427.737391825 1.68034166107984 91.0977613771127 19.3283651208725 -84.9270814267013 3374420.65588443 T 32 CATAB v2.0f-lin.ifort 2020-Jan-28 19:42:00 2020-Jan-28 19:42
2025-May-18 17:04 < 00:01 Jupiter 1.88276916810699 1.88276881797251 1.88276951824158 3.99386648712159 3.87958851553661 2460814.211411485 0.360521942235694 55.0355297299375 13.1665360267373 -81.0083439834895 3904273.08739143 T 32 CATAB v2.0f-lin.ifort 2020-Jan-28 19:42:00 2020-Jan-28 19:42
2035-Sep-01 12:35 < 00:01 Jupiter 1.88075282002355 1.88075234586765 1.88075329417966 3.75155389767128 3.62952194484041 2464572.024147552 0.665431381419159 113.049504158542 19.3416679399191 -84.7129051111324 3376250.88215986 T 32 CATAB v2.0f-lin.ifort 2020-Jan-28 19:42:00 2020-Jan-28 19:42
2107-Dec-05 22:30 00:03 Jupiter 1.83093959699127 1.83093916250569 1.83094003147852 3.99252777276925 3.87492521232635 2490964.437573041 2.56147916808958 152.745420928995 15.2545111922339 -85.1457865473325 3573646.76444177 T 32 CATAB v2.0f-lin.ifort 2020-Jan-28 19:42:00 2020-Jan-28 19:42
2118-Mar-10 02:53 00:03 Jupiter 1.95642527885561 1.95642424250938 1.95642631521473 3.676193747236 3.55647473474767 2494711.620331554 3.07580714041309 295.239714161493 22.108776931805 -80.7467569440202 3405028.48239225 T 32 CATAB v2.0f-lin.ifort 2020-Jan-28 19:42:00 2020-Jan-28 19:42
2180-Mar-02 23:55 00:05 Jupiter 1.98077201821862 1.98077025523639 1.98077378121785 3.84411268431613 3.73121394426646 2517350.496793717 4.57235999091529 310.941268012433 12.425537182413 -73.1651154327512 4108147.45871823 T 32 CATAB v2.0f-lin.ifort 2020-Jan-28 19:42:00 2020-Jan-28 19:42
2190-Jun-23 15:37 00:05 Jupiter 1.82715916790991 1.82715860618514 1.82715972963508 3.96615203658397 3.84749464420563 2521115.151019723 4.85715222002923 124.991354580406 26.452783528158 85.3940314790958 3428390.43387093 T 32 CATAB v2.0f-lin.ifort 2020-Jan-28 19:42:00 2020-Jan-28 19:42

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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