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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2061616597133458 3.5188e-08  
a 3.154769309357101 1.7862e-08 au
q 2.504376832527316 1.1471e-07 au
i 4.461234610063413 3.8461e-06 deg
node 238.0298288539305 5.3442e-05 deg
peri 130.5273815239136 5.4361e-05 deg
M 265.9769449689681 1.221e-05 deg
tp 2459535.041828931881
(2021-Nov-16.54182893)
7.2424e-05 TDB
period 2046.679491024459
5.60
1.7383e-05
4.759e-08
d
yr
n .1758946633211257 1.4939e-09 deg/d
Q 3.805161786186887 2.1545e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1627  
   data-arc span      13785 days (37.74 yr)  
   first obs. used      1982-09-19  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50178  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:54:55  

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 14:09 00:02 Jupiter 1.90828261277431 1.908281588124 1.90828363742581 2.69513452779362 2.5250776901834 2428019.089857128 2.30144328137472 110.013404767165 15.579850037774 -78.4139408798699 2447063.18150854 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55
1946-Apr-11 08:20 00:02 Jupiter 1.74237815089235 1.74237768438271 1.74237861740228 1.7731315694922 1.47368086915033 2431921.847103261 1.90667952525955 120.57992721976 45.8950870493427 70.432426765535 2119584.79343791 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55
1956-Dec-14 12:13 00:02 Jupiter 1.76019120031148 1.76019069018485 1.7601917104384 1.53907741425393 1.18589133355944 2435822.008849354 1.55961575584448 114.900137788159 57.4969815875377 -53.7992653874987 2557779.06267882 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55
1967-Aug-05 08:38 00:01 Jupiter 1.93239381508849 1.93239319454152 1.93239443563535 2.53959961953037 2.36070117145429 2439707.859890905 1.20042769354053 58.3805523113419 11.598594478349 86.7351850693352 1909604.99755104 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55
2042-Aug-15 03:36 < 00:01 Jupiter 1.92125738514104 1.92125699924307 1.92125777103891 2.81208489081388 2.65067609338049 2467111.650105554 0.791736917724862 50.9956589780965 12.8657874398697 -87.84849264274 3222421.72757687 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55
2053-Apr-23 05:13 00:01 Jupiter 1.74208687356781 1.7420865091665 1.74208723796893 1.90333647539205 1.62796404069302 2471015.717144269 1.14844096353435 81.8293810511045 33.4426308539054 76.9296198216565 2372786.78079733 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55
2063-Dec-30 03:31 00:02 Jupiter 1.75046016516595 1.75045969606584 1.75046063426595 1.5587187262664 1.20906278256598 2474918.646512455 1.58349110658486 86.1381031568384 69.2181376945427 -71.9295855070729 2433472.7693198 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55
2074-Aug-22 09:45 00:02 Jupiter 1.92220016112784 1.92219945892311 1.92220086333313 2.3494603788542 2.1537545946617 2478806.906066936 2.01222989284007 86.748760388958 11.3536016519104 -89.7983758365941 2285679.59082793 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55
2149-Aug-31 07:19 00:04 Jupiter 1.93655140558491 1.93654998757385 1.93655282359785 2.92218305577008 2.76846161284143 2506208.805098828 3.89008488681066 129.281603180743 17.6733674473166 -71.7629738373 2294561.77621365 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55
2160-May-09 18:33 00:04 Jupiter 1.74324422924448 1.74324347856921 1.74324497992827 2.02551256253076 1.76944169741314 2510113.273104615 4.15879220050147 251.601429109812 25.3975529153973 82.1811134601302 2431378.62739153 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55
2171-Jan-20 23:33 00:05 Jupiter 1.73383972625681 1.73383894811827 1.73384050439939 1.61467947210256 1.27676997534821 2514021.481066362 4.64801292193924 192.445113419775 69.1039379099867 70.4197285157812 2274349.99764351 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55
2181-Sep-15 09:40 00:05 Jupiter 1.90580681979759 1.90580514042855 1.90580849917312 2.17615557627333 1.96131768869468 2517911.902783996 5.22937295696458 229.765363578791 13.7876800657055 -85.1541434253479 2314617.80567084 T 22 CATAB v2.0f-lin.ifort 2020-Jun-23 18:55:08 2020-Jun-23 18:55

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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