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JPL Small-Body Database Browser
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21873 Jindrichuvhradec (1999 UU3)
Classification: Main-belt Asteroid          SPK-ID: 2021873
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2061616452171212 3.6004e-08  
a 3.154769297732616 1.819e-08 au
q 2.504376869031598 1.169e-07 au
i 4.46123602245087 3.8644e-06 deg
node 238.0297878772292 5.5548e-05 deg
peri 130.5274089488315 5.644e-05 deg
M 265.9769599731516 1.23e-05 deg
tp 2459535.041740675318
(2021-Nov-16.54174068)
7.3001e-05 TDB
period 2046.679479712255
5.60
1.7701e-05
4.846e-08
d
yr
n .1758946642933132 1.5213e-09 deg/d
Q 3.805161726433634 2.194e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1562  
   data-arc span      13383 days (36.64 yr)  
   first obs. used      1982-09-19  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50247  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:03:03  

Additional Information
 Earth MOID = 1.50672 au 
 Jupiter MOID = 1.69795 au 
 T_jup = 3.169 
[ 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 13.1   n/a MPO302198  
diameter diameter 7.183 km 0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 50.587 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.237   0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21873 Jindřich{u°}vhradec           Discovered 1999 Oct. 29 by J. Ticha and M. Tichy at Klet.
Jindřich{u°}v Hradec is the pleasant south Bohemian town founded in the thirteenth century, known for its Renaissance château and provost's Gothic church situated precisely on the fifteenth meridian east of Greenwich, as a line across its paving stones shows.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020128/MPCPages.arcLast Updated: 2003-10-02

[ 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
1935-Aug-04 14:10 00:02 Jupiter 1.90828293935566 1.90828189407995 1.90828398463257 2.69513607893367 2.52507937587161 2428019.090165105 2.35499483212284 112.753519546777 15.9621118543765 -78.5456817554562 2401284.77025586 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03
1946-Apr-11 08:20 00:02 Jupiter 1.74237828737568 1.74237780727319 1.74237876747847 1.77313270603937 1.47368226248232 2431921.847375221 1.95108020156906 123.712768093991 46.7202511876403 69.9153327517756 2090665.54041448 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03
1956-Dec-14 12:13 00:02 Jupiter 1.76019113039961 1.76019061535289 1.76019164544663 1.53907730781266 1.18589117930058 2435822.009080129 1.59502469071359 116.352242220083 58.8020805738917 -54.061802412222 2498426.25366973 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03
1967-Aug-05 08:39 00:01 Jupiter 1.93239363873737 1.93239301161082 1.93239426586382 2.53959832031645 2.36069975683841 2439707.860069685 1.22756334575407 58.968219149307 11.95419678229 86.9323070561513 1891073.07401844 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03
2042-Aug-15 03:36 < 00:01 Jupiter 1.92125749358176 1.92125710058386 1.92125788657955 2.81208538312355 2.6506766250563 2467111.649994903 0.816354495648898 52.9478107437453 13.0531632795842 -87.7233467640961 3184778.92911255 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03
2053-Apr-23 05:12 00:01 Jupiter 1.7420869372687 1.74208657069078 1.74208730384643 1.90333698851514 1.62796465153242 2471015.716992300 1.18086303257364 83.6574011429578 33.8203667304772 76.5736131930232 2362458.20994609 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03
2063-Dec-30 03:31 00:02 Jupiter 1.75046020289082 1.75045971395565 1.75046069182589 1.55871903808579 1.20906319318741 2474918.646293176 1.62739184009081 88.4434130274896 70.3129500352564 -68.1435935910733 2368666.54861678 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03
2074-Aug-22 09:44 00:02 Jupiter 1.92220019576406 1.92219946595508 1.92220092557359 2.34946058999782 2.15375482867802 2478806.905798343 2.06615913602122 88.3752519031352 11.575211938952 -89.6711094931837 2210991.97037817 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03
2149-Aug-31 07:19 00:04 Jupiter 1.93655127764779 1.93654981911861 1.93655273617884 2.92218239524009 2.76846090519741 2506208.804557886 3.99334655063935 132.94468043147 18.0559890465841 -71.7105282575233 2228842.26671328 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03
2160-May-09 18:32 00:04 Jupiter 1.74324419119097 1.74324342968447 1.74324495270649 2.02551232305862 1.76944141729068 2510113.272514160 4.26786842337017 258.042862577016 25.5818647088527 82.17564475702 2420430.46818213 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03
2171-Jan-20 23:32 00:05 Jupiter 1.73383985786418 1.73383904703627 1.73384066869633 1.61467975440022 1.27677036140184 2514021.480419414 4.77012010406893 196.010717848334 71.0230160859239 70.6979539234814 2217461.12934936 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03
2181-Sep-15 09:39 00:05 Jupiter 1.90580706711182 1.90580533229914 1.90580880193122 2.17615695396883 1.96131924670557 2517911.902073054 5.36598884930727 235.525101385316 13.899039597966 -85.089315576086 2257105.77789709 T 20 CATAB v2.0e-lin.ifort 2019-May-30 03:03:14 2019-May-30 03:03

Alternate Designations
 1999 UU3 = 1982 SN8 = 1988 XA5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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