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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2061616569048133 3.3975e-08  
a 3.15476930838778 1.7611e-08 au
q 2.504376840618103 1.116e-07 au
i 4.461235256736659 3.8185e-06 deg
node 238.0298024501894 5.0118e-05 deg
peri 130.5274081157578 5.1115e-05 deg
M 265.9769451084721 1.2208e-05 deg
tp 2459535.041827892407
(2021-Nov-16.54182789)
7.2397e-05 TDB
period 2046.679490081177
5.60
1.7138e-05
4.692e-08
d
yr
n .1758946634021927 1.4729e-09 deg/d
Q 3.805161776157456 2.1242e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1701  
   data-arc span      13833 days (37.87 yr)  
   first obs. used      1982-09-19  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49439  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:47:27  

Additional Information
 Earth MOID = 1.50672 au 
 Jupiter MOID = 1.69795 au 
 T_jup = 3.169 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456867.5 (2014-Jul-29.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2072673811558219 3.388e-08  
q 2.499063735002059 1.1107e-07 au
tp 2457493.632001082577
(2016-Apr-15.13200108)
6.1905e-05 TDB
node 238.0440384649324 5.0098e-05 deg
peri 131.114729238993 5.1089e-05 deg
i 4.463324009755471 3.8205e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1701  
   data-arc span      13833 days (37.87 yr)  
   first obs. used      1982-09-19  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49439  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:47:27  

Additional Information
 Jupiter MOID = 1.69795 au 
 T_jup = 3.169 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.147855654479797E-15 -3.734118053805834E-15 -3.691097628556378E-13 3.172989350663841E-15 -4.410934979092502E-14 -6.903069782306771E-17
q -3.734118053805834E-15 1.233563811874653E-14 1.595642002676405E-12 -1.039412678403258E-14 1.965328236720396E-13 3.80752679247297E-16
tp -3.691097628556378E-13 1.595642002676405E-12 3.832212125832374E-9 -1.246319999002151E-11 6.39819900922311E-10 1.067728634347705E-12
node 3.172989350663841E-15 -1.039412678403258E-14 -1.246319999002151E-11 2.509808557915067E-9 -2.504031888429325E-9 6.808009602728862E-12
peri -4.410934979092502E-14 1.965328236720396E-13 6.39819900922311E-10 -2.504031888429325E-9 2.610055696294073E-9 -6.620250305159153E-12
i -6.903069782306771E-17 3.80752679247297E-16 1.067728634347705E-12 6.808009602728862E-12 -6.620250305159153E-12 1.459627250309485E-11

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 14:09 00:02 Jupiter 1.90828262402799 1.9082816149591 1.90828363309806 2.6951347000371 2.52507787506363 2428019.089890616 2.24902966635193 107.054204786131 14.9614322379005 -78.0599514800122 2498416.37264656 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47
1946-Apr-11 08:20 00:02 Jupiter 1.74237814591593 1.74237769662646 1.74237859520569 1.77313182847953 1.4736811798215 2431921.847131099 1.86310887742908 117.292080647152 44.2853428263701 71.3367319331526 2169883.43069728 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47
1956-Dec-14 12:13 00:02 Jupiter 1.76019119948459 1.76019069162962 1.76019170733985 1.53907750309956 1.18589144867475 2435822.008874560 1.52559448003126 113.760368435908 55.4996953745304 -53.2442929601024 2654007.39905362 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47
1967-Aug-05 08:38 00:01 Jupiter 1.93239382646002 1.93239320647666 1.93239444644338 2.53959938420604 2.36070091938928 2439707.859920276 1.17475876510126 57.93005859902 11.0283833484161 86.4778253743464 1912640.8892322 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47
2042-Aug-15 03:36 < 00:01 Jupiter 1.92125737513211 1.92125699900239 1.92125775126182 2.81208489438205 2.65067609629947 2467111.650090984 0.761508038308718 47.9472563365321 12.623363616905 -88.0295594661163 3265488.06829674 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47
2053-Apr-23 05:13 00:01 Jupiter 1.74208685898609 1.74208649687297 1.74208722109911 1.90333661632731 1.6279642029678 2471015.717118151 1.11102280270123 79.7537048718906 32.7124720926536 77.6315077655105 2386690.66032546 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47
2063-Dec-30 03:31 00:02 Jupiter 1.75046017026734 1.75045973116056 1.75046060937412 1.55871891356697 1.20906302519945 2474918.646489478 1.53372875826535 82.7719591424292 67.3920563689384 -80.6966810091267 2542335.96301796 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47
2074-Aug-22 09:45 00:02 Jupiter 1.92220019166975 1.92219953008319 1.92220085325676 2.34946037916683 2.15375459825359 2478806.906044800 1.95234152700813 85.1491468952098 10.9763769571671 -89.926455540908 2415266.38913226 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47
2149-Aug-31 07:19 00:04 Jupiter 1.93655137705089 1.93655000912348 1.93655274497996 2.92218294306225 2.7684614915475 2506208.805048839 3.77781198275621 124.945569361603 17.0294146179946 -71.8482394876777 2404289.80202314 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47
2160-May-09 18:33 00:04 Jupiter 1.74324420559633 1.74324346511059 1.74324494609018 2.02551261437954 1.76944175304028 2510113.273041034 4.04144155085786 244.613880964506 25.0712232052612 82.1954715421779 2437584.68797441 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47
2171-Jan-20 23:33 00:05 Jupiter 1.73383973430275 1.73383900174532 1.73384046686412 1.61467969176398 1.27677025492071 2514021.481006865 4.51696704675423 189.303809911927 65.6353921651048 69.830676565863 2377574.44708663 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47
2181-Sep-15 09:40 00:05 Jupiter 1.90580686371118 1.90580525484126 1.90580847258727 2.17615567693382 1.96131780560269 2517911.902730951 5.08341247654441 223.661874023626 13.6252462990375 -85.2538951232775 2407398.22137584 T 23 CATAB v2.0f-lin.ifort 2020-Aug-25 01:47:39 2020-Aug-25 01:47

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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