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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .205923582261544 3.3778e-08  
a 3.157671848166357 1.7674e-08 au
q 2.507432749585511 1.1142e-07 au
i 4.457226266855735 3.7888e-06 deg
node 237.9951597890424 4.9095e-05 deg
peri 130.2902134254058 5.0107e-05 deg
M 301.3769629842668 1.2342e-05 deg
tp 2459534.244972784220
(2021-Nov-15.74497278)
7.2183e-05 TDB
period 2049.504705293137
5.61
1.7207e-05
4.711e-08
d
yr
n .1756521949279984 1.4747e-09 deg/d
Q 3.807910946747203 2.1313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1747  
   data-arc span      13900 days (38.06 yr)  
   first obs. used      1982-09-19  
   last obs. used      2020-10-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49599  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:54:28  

Additional Information
 Earth MOID = 1.50821 au 
 Jupiter MOID = 1.6965 au 
 T_jup = 3.168 
[ 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 13.16   n/a E2021B10  
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. 2020-October); 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 1.90828268401676 1.90828167911202 1.90828368892268 2.69513488877804 2.52507808301274 2428019.089990988 2.23654443450434 106.282334373234 14.7570493908467 -77.9603632786114 2529568.64255982 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54
1946-Apr-11 08:20 00:02 Jupiter 1.74237813597483 1.74237769148735 1.74237858046261 1.77313221444281 1.47368164415237 2431921.847199457 1.85270826073462 116.38966569931 43.7978790401882 71.5058955407833 2189062.78572832 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54
1956-Dec-14 12:13 00:02 Jupiter 1.76019118349211 1.76019067698389 1.76019169000063 1.53907762987566 1.18589161176259 2435822.008913864 1.51748987148658 113.453785848466 54.9111042281063 -53.0728817256025 2679359.86445163 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54
1967-Aug-05 08:38 00:01 Jupiter 1.93239382459607 1.93239320596214 1.93239444323 2.53959912783983 2.36070064444177 2439707.859937950 1.16866185033554 57.4723896060517 10.8395751512111 86.369637059635 1917153.91532017 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54
2042-Aug-15 03:36 < 00:01 Jupiter 1.92125732682013 1.92125695599774 1.92125769764252 2.81208447949146 2.65067565288122 2467111.650024835 0.754075806843056 47.0975638626587 12.4694108001486 -88.143012525577 3302076.25609168 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54
2053-Apr-23 05:13 00:01 Jupiter 1.74208680717879 1.74208644689104 1.74208716746645 1.90333664569929 1.62796423007618 2471015.717039158 1.10190746720673 79.0038922346936 32.4354150343473 77.68650921996 2399599.84472185 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54
2063-Dec-30 03:31 00:02 Jupiter 1.75046018838573 1.75045975749583 1.75046061927562 1.55871917214666 1.20906336491266 2474918.646357761 1.52167440012609 81.9044397124456 66.7603804651024 -82.818887891042 2570646.72170984 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54
2074-Aug-22 09:44 00:02 Jupiter 1.92220032121622 1.92219967132418 1.9222009711088 2.34946103841827 2.15375533232846 2478806.905855159 1.93780184292228 84.5144282476817 10.8626009681384 -89.9343279918998 2461154.38220904 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54
2149-Aug-31 07:19 00:04 Jupiter 1.93655105788437 1.936549703205 1.93655241256539 2.9221811312007 2.76845955391482 2506208.804551333 3.75117513543302 123.889521710373 16.7983755153421 -71.8787975934333 2446392.51479658 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54
2160-May-09 18:32 00:04 Jupiter 1.74324401844139 1.74324328135538 1.74324475553542 2.02551160565641 1.76944057037208 2510113.272476246 4.01376054611592 242.879643279384 24.883086594804 82.1876903403554 2454223.89181468 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54
2171-Jan-20 23:32 00:04 Jupiter 1.73383987759139 1.73383915638958 1.73384059879704 1.61467978697017 1.27677040905889 2514021.480339769 4.48624332439065 188.454089509785 64.7254791566506 69.6745069787317 2405273.33605981 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54
2181-Sep-15 09:39 00:05 Jupiter 1.90580731000229 1.90580571876768 1.90580890124298 2.17615813941338 1.96132059213243 2517911.901922276 5.04931955389391 222.149792253559 13.5200746119437 -85.2684452518 2443956.15229303 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:54:33 2021-Apr-13 03:54

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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