I/201ivo://CDS.VizieR/I/201CDSDunham D.W.Warren W.H. Jr.2014-10-20T15:11:45Z2003-11-05T11:19:07ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frastrometryThe XZ catalog was created at the U.S. Naval Observatory in 1977 by Richard Schmidt and Tom Van Flandern, primarily for the purpose of generating predictions of lunar occultations, and for analyzing timings of these events. It was designed to include all stars from Robertson's Zodiacal Catalog (ZC), the SAO catalog, and the AGK3 catalog that are within 6d 40' of the ecliptic (a region hereafter called "the Zodiac"), which is as far as the Moon's limb can ever get as seen from anywhere on the Earth's surface, leaving some margin for stellar proper motions and change in the obliquity of the ecliptic over the course of three centuries. The original version contained 32,221 entries. Since that time, a number of changes have been made in succeeding versions, including better positions and proper motions, and the elimination and addition of stars. The catalog contains visual magnitudes and radial velocities as well as astrometric data. Two years after the catalog was created, and observations were already reported using its numbers, it was found that about 200 stars near the equator from the AGK3 catalog were outside the Zodiac, and a similar number that should have been included were not. Since the numbering system had already been established, the catalog was not changed to correct this deficiency. Over the years, some errors in the catalog, due mainly to errors in the SAO and AGK3, were corrected. A few stars with very bad data were "eliminated" by changing their declination to -89d and adding 40 to their magnitudes. In 1986, most of the stellar positional data were replaced with improved data from Harrington's and Douglass' Zodical Zone (ZZ) catalog, which used for its observing list SAO stars in the Zodiac (actually broader than the XZ Zodiac because ecliptic latitudes to +/-15d were used) north of declination approximately -25d. The positional data for many of the stars south of declination -25d with right ascensions greater than 18h were improved with data from the Lick Voyager Uranus catalog. In 1991, the photographic magnitudes of the AGK3 stars not in the SAO were converted to photovisual magnitudes by applying corrections based on each star's spectral type, when available. Stellar magnitudes and double-star codes have been updated periodically based on reports from observers. Each time a series of updates was made, the XZ version was changed. The current version is XZ80N, created during the summer of 1992. Late in the summer of 1992, Mitsuru Soma in Japan created a J2000 version of the XZ, which we call XZ80NJ2. The next update is planned for 1994, when the positional data may also be replaced with PPM data; probably only the J2000 version will be updated. The XZ catalog is no longer maintained at the U.S. Naval Observatory (USNO); it is now maintained by the International Occultation Timing Association (IOTA). The changes made to the different versions of the XZ catalog during the past several years have been documented in Occultation Newsletter, IOTA's quarterly publication.(Unpublished) January 1995https://cdsarc.cds.unistra.fr/viz-bin/cat/I/201CatalogResearchIsServedByTAP VizieR generic serviceIsPreviousVersionOfI/291IsServedByConesearch servicerelated-toI/61 : AGK3 Catalogue (Dieckvoss, Heckmann 1975)I/131 : SAO Star Catalog J2000 (SAO Staff 1966; USNO, ADC 1990)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=I/201https://vizier.iucaa.in/viz-bin/VizieR-2?-source=I/201http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=I/201https://vizier.cds.unistra.fr/viz-bin/votable?-source=I/201https://vizier.iucaa.in/viz-bin/votable?-source=I/201http://vizieridia.saao.ac.za/viz-bin/votable?-source=I/201GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table I/201/b1950 (XZ80N catalog with B1950.0 positions)https://vizier.cds.unistra.fr/viz-bin/conesearch/I/201/b1950?https://vizier.iucaa.in/viz-bin/conesearch/I/201/b1950?http://vizieridia.saao.ac.za/viz-bin/conesearch/I/201/b1950?GETtext/xml+votable180.050000true0.64598282-5.186630260.0055555555555555563/3 5 6 67 68 73 74 282 283 285 286 290 293 375 379 380 401 408 410 421 423 429 451 452 456 699 759 761 764 4/10 11 18 19 28 29 33 34 35 36 37 38 40 64 65 66 68 261 263 276 280 282 289 291 300 301 302 304 384 385 386 392 1126 1127 1138 1139 1148 1149 1154 1155 1156 1157 1159 1164 1165 1169 1170 1216 1217 1220 1407 1471 1493 1494 1495 1497 1498 1499 1509 1510 1511 1513 1514 1515 1524 1528 1591 1599 1601 1608 1609 1611 1612 1636 1689 1691 1713 1714 1715 1720 1721 1722 1724 1726 1728 1730 1736 1799 1803 1812 1813 1814 1816 1817 1818 1828 1830 1832 1833 1834 1856 2679 2685 2686 2769 2771 2772 2773 2774 2776 2777 2778 2789 2790 2791 2800 2801 2803 3003 3005 3006 3007 3023 3031 3033 3034 3035 3042 3043 3050 3051 3052 3053 3061 5/30 31 38 39 69 70 71 120 121 122 124 128 129 131 156 157 164 192 193 194 196 268 270 276 288 289 1049 1051 1069 1071 1112 1114 1124 1125 1126 1132 1134 1155 1161 1162 1163 1212 1224 1226 1548 1549 1550 1552 1553 1554 1572 1576 4286 4287 4329 4330 4331 4332 4333 4334 4339 4341 4342 4343 4344 4347 4348 4350 4351 4478 4479 4494 4495 4499 4500 4502 4546 4547 4549 4550 4551 4600 4601 4602 4604 4611 4614 4615 4633 4634 4635 4664 4665 4666 4668 4669 4672 4673 4675 4684 4686 4687 4705 4706 4707 4708 4709 4720 4721 4736 4737 4740 4872 4873 4874 4876 4877 4884 4885 4886 4928 4929 5623 5879 5883 5951 5965 5966 5967 5969 5970 5971 5987 6029 6030 6031 6033 6035 6049 6050 6051 6100 6104 6116 6120 6269 6271 6358 6359 6387 6388 6390 6391 6393 6394 6403 6409 6410 6411 6412 6413 6415 6440 6442 6443 6452 6453 6454 6456 6457 6458 6460 6464 6466 6552 6553 6554 6576 6578 6733 6734 6735 6753 6754 6755 6839 6845 6847 6849 6851 6892 6893 6895 6900 6901 6902 6908 6916 6917 6918 6924 6926 6952 6953 6954 7040 7191 7195 7207 7211 7260 7261 7262 7276 7277 7278 7280 7281 7282 7316 7317 7319 7324 7325 7340 7341 7342 7344 7345 7346 7360 7428 7432 7680 7681 7682 7688 10711 10715 10733 10735 10737 10738 10739 10750 11061 11063 11068 11070 11071 11075 11081 11082 11083 11100 11101 11102 11116 11117 11119 11120 11121 11123 11124 11126 11128 11130 11131 11153 11155 11173 11175 11182 11208 11209 11211 11216 11218 11232 11233 11235 11236 11238 11240 11241 11242 11998 11999 12011 12017 12018 12019 12090 12091 12122 12123 12130 12131 12163 12165 12166 12167 12192 12194 12195 12197 12198 12199 12216 12217 12218 12220 12240 12241 12243 12248 12249 12256 12257 6/109 110 111 117 118 119 142 143 147 149 150 151 267 269 270 271 274 275 492 493 494 500 501 504 520 521 522 632 633 634 636 660 661 662 664 665 672 673 704 705 780 781 782 788 789 790 792 793 800 801 802 804 832 833 1077 1078 1079 1084 1085 1108 1109 1112 1120 1121 1122 1124 1160 1161 1162 1164 1168 4167 4173 4175 4195 4201 4202 4203 4253 4255 4275 4281 4282 4283 4432 4434 4452 4454 4460 4508 4509 4510 4532 4533 4534 4540 4544 4545 4546 4615 4641 4643 4852 4856 4857 4858 4880 4882 4888 4900 4902 4992 4994 6204 6205 6206 6240 6308 6312 6313 17130 17131 17133 17134 17135 17142 17307 17310 17311 17314 17315 17341 17342 17343 17350 17352 17353 17355 17362 17363 17380 17381 17383 17384 17385 17386 17397 17398 17399 17659 17855 17897 17899 17901 17902 17903 17906 17907 17909 17910 17911 17962 17963 17966 17967 17974 17975 17991 17995 18014 18015 18182 18183 18193 18194 18195 18412 18413 18414 18420 18421 18422 18441 18442 18443 18450 18451 18453 18454 18455 18528 18529 18531 18668 18669 18670 18680 18681 18696 18697 18698 18740 18742 18743 18817 18818 18819 18840 18841 18843 18844 18845 18848 18849 18852 18888 18889 18896 18897 18900 18952 18953 18954 18956 18957 18964 18965 19008 19500 19501 19512 19513 19548 19549 19552 19553 19554 19556 19720 19721 19728 19729 19732 19733 22485 22486 22487 22489 22491 22503 22509 22510 22511 23515 23527 23529 23530 23531 23775 23795 23797 23798 23799 23801 23802 23803 23837 23839 23855 23859 23873 23874 23875 23941 23942 23943 23945 23946 23947 24095 24111 24115 24137 24138 24139 24193 24194 24195 24404 24405 24406 24408 24409 24410 24420 24421 24422 24424 24425 24426 24468 24469 24470 24472 24473 24474 24476 24484 24485 24486 24488 24489 24490 25047 25053 25054 25055 25081 25083 25423 25425 25427 25429 25430 25431 25445 25447 25453 25455 25541 25542 25543 25545 25547 25556 25557 25559 25569 25571 25582 25583 25605 25606 25607 25633 25635 25656 25658 25659 25764 25766 25767 25820 25821 25822 25837 25838 25839 25844 25846 25849 25851 25860 25862 25868 25870 25888 25889 25890 25896 25897 25898 26192 26194 26202 26220 26222 26308 26336 26338 26344 26346 26846 26847 26867 26868 26869 26870 26901 26903 26909 26910 26911 26927 26930 26931 27011 27040 27041 27045 27047 27053 27054 27055 27263 27349 27350 27351 27379 27385 27386 27387 27401 27403 27577 27578 27579 27612 27614 27636 27640 27641 27642 27676 27677 27678 27700 27712 27792 27793 27794 27800 27802 27820 27821 27822 28164 28166 28168 28169 28170 28192 28193 28194 28200 28757 28758 28759 28761 28762 28763 28773 28774 28775 28777 28778 28779 28821 28822 28823 28825 28826 28827 28837 28838 28839 28841 28842 28843 29052 29053 29054 29116 29132 29136 29137 29152 29272 29274 29275 29304 29305 29306 29308 29372 29373 29374 29392 29408 29410 29444 29445 29446 29448 29449 29450 29472 29716 29717 29718 29720 29721 29760 30732 30733 30735 30736 30738 30739 30744 30756 30760 30761 30762 32768 36864 42837 42839 42843 42855 42911 42931 42937 42938 42939 42945 42947 42994 42995 42996 42997 42999 43004 43005 43007 44157 44159 44243 44249 44250 44251 44269 44271 44276 44277 44278 44293 44295 44299 44321 44322 44323 44412 44414 44415 44472 44474 44475 44488 44489 44490 44500 44501 44502 44508 44510 44516 44518 44519 44528 44529 44530 44536 44599 44605 44607 44611 44617 44619 44699 44717 44719 44720 44721 44722 44724 44726 44727 44732 44733 44735 44841 44842 44843 44868 44869 44870 44896 44897 44898 44904 44936 44937 44939 44948 44949 44950 44973 44974 44975 44976 44978 45058 47983 47989 47990 47991 48029 48030 48031 48039 48042 48043 48065 48066 48067 48318 48319 48347 48349 48350 48351 48358 48359 48446 48447 48479 48486 48515 48518 48519 48647 48650 48651 48657 48658 48659 48772 48773 48774 48784 48785 48786 48876 48877 48884 48968 48969 48970 49000 49001 49002 49004 49008 49009 49010 49012 49032 49033 49034 49036 49040 49042https://cdsarc.cds.unistra.fr/viz-bin/moc/I/201?format=asciiOpticaldefaultI/201/b1950XZ80N catalog with B1950.0 positionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXZ[1,32221]+ Sequential numbermeta.id;meta.mainintprimaryindexedDMDurchmusterung identifier (BD, SD, CD)meta.idcharm_DMMultiplicity codemeta.code.multipcharVmagVisual magnitudemagphot.mag;em.opt.VfloatRAB1950Right ascension (B1950.0)pos.eq.ra;meta.mainindexedpmRAProper motion in RA0.01s/yrpos.pm;pos.eq.rafloatDEB1950Declination (eq & ep B1950.0)pos.eq.dec;meta.mainindexedpmDEProper motion in Dec (arcsec/century)10mas/yrpos.pm;pos.eq.decfloatplx?Trigonometric parallaxarcsecpos.parallax.trigfloatnullableRV?Radial velocitykm/sphys.veloc;pos.heliocentricintnullablec2CSecond catalog code (*)meta.id;meta.datasetintc2IDSecond catalog numbermeta.idintSAO?SAO Catalog numbermeta.numberintnullableSpTypeSpectral typesrc.spTypechare_RAsError in RA (at epoch)arcsecstat.errorfloate_pmRAError in RA proper motion10mas/yrstat.errorfloate_DEError in Dec (at epoch)arcsecstat.errorfloate_pmDEError in Dec PM (at epoch)10mas/yrstat.errorfloatEp-1850Epoch - 1850 (integer years)yrtime.epochintnameStar name or catalog designationmeta.id;meta.maincharcodeSpecial codingmeta.codecharsrcSource catalog codemeta.refint