sucac2 Examples

Example 1. Search with results to standard output

Find the 10 brightest UCAC2 stars in a 1-degree square box centered on 10:00:00 +10:00:00 J2000 and sort them by right ascension.: sucac2 -shn 10 -r -1800 10:00:00 +10:00:00 J2000
produces the following: sucac2 WCSTools 3.6.9, 6 July 2007, Doug Mink SAO USNO-UCAC2 10:00:00.000 +10:00:00.00 J2000 +- +00:30:27.8 +00:30:00.0 at epoch 2000.0000 10 / 323 USNO UCAC2 Catalog Stars (Mag brighter than 9.32) UCAC2_num RA2000 Dec2000 MagJ MagH MagK MagC Arcsec 200.077196 09:58:00.597 +09:41:40.62 8.26 8.16 8.07 9.06 2079.10 201.075157 09:58:28.100 +10:02:51.17 8.79 8.54 8.49 9.75 1368.21 201.075159 09:58:28.737 +10:25:28.51 8.20 7.97 7.86 9.26 2037.51 201.075192 09:59:10.688 +10:04:23.55 8.75 8.14 7.96 10.39 774.58 201.075196 09:59:17.051 +10:10:03.02 8.94 8.80 8.64 9.79 875.18 201.075202 09:59:24.702 +10:02:51.43 9.32 8.71 8.57 11.01 548.85 200.077278 10:00:05.026 +09:38:23.41 7.91 7.28 7.07 9.81 1298.71 200.077325 10:01:42.737 +09:36:40.39 8.20 7.68 7.61 9.73 2065.16 201.075298 10:01:46.850 +10:12:57.37 8.14 7.91 7.83 9.21 1758.97 200.077333 10:01:51.501 +09:35:04.90 9.25 8.73 8.60 10.74 2225.25

Example 2. Search with results to a file

Find all UCAC2 stars within 3 arcminutes of M51 and write RA-sorted results to a file: sucac2 -tswr 180 -o m51 13:27:48.311 +47:27:28.98 B1950
produces file m51.ucac2: catalog USNO-UCAC2 ra 13:27:48.311 dec +47:27:28.98 radecsys fk4 equinox 1950.0000 epoch 1950.0000 rpmunit mas/year dpmunit mas/year radsec 180.00 catsort ra program sucac2 WCSTools 3.6.9, 6 July 2007, Doug Mink SAO ucac2_id ra1950 dec1950 magj magh magk magc pmra pmdec arcsec ---------- ------------ ------------ ----- ----- ----- ----- ------ ------ ------ 275.066612 13:27:49.138 +47:25:33.39 12.86 12.24 12.14 14.77 -39.6 -21.7 115.89

Example 3. Find closest star

Find the closest UCAC2 star to 10:00:00 +10:00:00 J2000: sucac2 -ha 10:00:00 +10:00:00 J2000
produces the following: sucac2 WCSTools 3.6.9, 6 July 2007, Doug Mink SAO Find closest star USNO-UCAC2 10:00:00.000 +10:00:00.00 J2000 r= +00:15:00.0 at epoch 2000.0000 UCAC2_num RA2000 Dec2000 MagJ MagH MagK MagC Arcsec 200.077277 10:00:03.989 +09:59:00.50 12.53 12.01 11.88 13.98 83.75

Example 4. List selected stars from catalog

List UCAC2 Catalog stars 180.000001 through 180.000010: sucac2 -h 180.000001-180.000010x0.000001
produces the following: sucac2 WCSTools 3.6.9, 6 July 2007, Doug Mink SAO UCAC2_num RA2000 Dec2000 MagJ MagH MagK MagC 180.000001 00:00:00.810 -00:16:40.99 11.36 11.06 11.00 12.24 180.000002 00:00:02.582 -00:04:21.74 12.16 11.85 11.79 13.10 180.000003 00:00:02.588 -00:13:47.10 12.50 12.13 12.05 13.58 180.000004 00:00:03.380 -00:23:43.95 13.81 13.38 13.30 15.13 180.000005 00:00:04.373 -00:29:01.45 11.43 11.13 11.02 12.37 180.000006 00:00:05.842 -00:10:08.03 14.04 13.53 13.39 15.95 180.000007 00:00:06.082 -00:15:47.40 13.53 13.05 12.95 15.15 180.000008 00:00:07.347 -00:00:22.66 14.43 14.09 13.92 15.78 180.000009 00:00:07.826 -00:07:54.78 14.03 13.67 13.61 15.52 180.000010 00:00:08.984 -00:03:53.33 9.48 9.16 9.08 10.51

Example Example 5. Match stars in input catalog

Match the stars in the input catalog test.tab to the UCAC2 Catalog and list them one match per line.

sucac2 -tl @test.tab

produces the following:

catalog USNO-UCAC2
search  test.tab
radecsys        fk5
equinox 2000.0000
epoch   2000.0000
radsec  900.00
rpmunit mas/yr
dpmunit mas/yr
program sucac2 WCSTools 3.6.9, 6 July 2007, Doug Mink SAO
ppm_id  srch_ra         srch_dec        s_mag   s_TYPE  ucac2_id        ra              dec             magj    magh    magk    magc    pmra    pmdec   n       dra     ddec    drad   
------- ------------    ------------    -----   ----    ----------      ------------    ------------    -----   -----   -----   -----   ------  ------  --      ---     ------- -------  -------
240020  22:15:54.555    -11:36:56.13     9.80   __      157.176207      22:15:54.552    -11:36:56.24     9.16    8.75    8.72   10.12     10.9   -32.2  63        -0.05   -0.11    0.12
267313  17:47:51.210    -22:58:17.35     9.10   A0      135.149678      17:47:51.193    -22:58:17.31     8.03    7.89    7.83    9.02     -0.6   -15.5  1412      -0.23    0.04    0.23
196784  13:42:07.204    -09:06:40.06     8.60   K0      162.080730      13:42:07.202    -09:06:40.06     6.97    6.51    6.42    8.55     11.9   -13.2  68        -0.03    0.00    0.03
127373  10:24:43.528    +11:21:21.15    10.20   K0      203.072408      10:24:43.509    +11:21:21.47     7.35    6.77    6.64    9.16     -6.4    -9.9  60        -0.28    0.32    0.43
095438  06:07:46.792    +23:28:44.76    10.30   K0      227.033497      06:07:46.836    +23:28:44.96     7.60    7.17    7.09    9.11     -3.2    -3.4  704        0.61    0.20    0.64

where the columns are input catalog star name, RA, Dec, magnitude, spectral type, UCAC region.number, RA, Dec, 2MASS J magnitude, 2MASS H magnitude, 2MASS Ks magnitude, UCAC magnitude, number of stars in the 120-arcsecond radius default search region, and catalog - search dra, ddec, and dr (in arcseconds).

Example Example 6. Search over the web with results to standard output

Find the 10 closest UCAC2 stars in a 3-arcminute circle centered on 10:00:00 +30:00:00 J2000 and sort them by right ascension.: setenv UCAC2_PATH http://xxx/cgi-bin/scat
sucac2 -s p -vn 10 -r 360 10:00:00 +30:00:00 J2000
produces the following:
sucac2 WCSTools 3.6.9, 6 July 2007, Doug Mink SAO Center: 10:00:00.000 +30:00:00.00 J2000 Radius: +00:06:00.00 USNO-UCAC2 10:00:00.000 +30:00:00.00 J2000 r= +00:06:00.0 at epoch 2000.0000 http://tdc-www.harvard.edu/cgi-bin/scat?catalog=ucac2&ra=150.0000000&dec=30.0000000&system=J2000&rad=360.000&sort=distance&epoch=2000.00000&nstar=10 SearchLim: RA: 09:59:32.287 - 10:00:27.713 Dec: +29:54:00.00 - +30:06:00.00 RefLim: RA: 09:59:32.259 - 10:00:27.741 Dec: +29:54:00.00 - +30:06:00.00 TABREAD: Catalog http://tdc-www.harvard.edu/cgi-bin/scat : 7 / 8 / 7 found 7 USNO UCAC2 Catalog Stars 241.064065 10:00:07.743 +30:00:04.93 11.15 10.70 10.59 12.40 100.70 240.063601 09:59:47.777 +29:57:19.19 14.05 13.62 13.46 15.54 226.01 241.064060 09:59:54.375 +30:03:52.05 13.84 13.54 13.51 15.16 243.28 240.063598 09:59:37.069 +29:58:13.61 11.81 11.18 10.96 14.65 316.35 240.063609 10:00:09.784 +29:54:57.57 10.40 9.82 9.70 11.83 328.07 241.064055 09:59:39.456 +30:03:41.81 12.33 11.94 11.87 13.37 346.95 241.064069 10:00:17.548 +30:04:30.73 12.35 12.05 12.01 13.29 353.86
With a local catalog,
sucac2 -hs p -vn 10 -r 360 10:00:00 +30:00:00 J2000
Called locally, scat returns the same result, with occasional roundoff differences in the last digit:
sucac2 WCSTools 3.6.9, 6 July 2007, Doug Mink SAO Center: 10:00:00.000 +30:00:00.00 J2000 Radius: +00:06:00.00 USNO-UCAC2 10:00:00.000 +30:00:00.00 J2000 r= +00:06:00.0 at epoch 2000.0000 SearchLim: RA: 09:59:32.287 - 10:00:27.713 Dec: +29:54:00.00 - +30:06:00.00 RefLim: RA: 09:59:32.259 - 10:00:27.741 Dec: +29:54:00.00 - +30:06:00.00 UCACZONES: searching 2 zones: 240 - 241 UCACZONES: Dec: 29.90000 - 30.10000 UCACREAD: 1 / 2: 3 / 19 / 173332 sources from zone 240 UCACREAD: 2 / 2: 7 / 25 / 173703 sources from zone 241 UCACREAD: 2 zones: 7 / 347035 found 7 USNO UCAC2 Catalog Stars 241.064065 10:00:07.743 +30:00:04.93 11.15 10.70 10.59 12.40 100.71 240.063601 09:59:47.777 +29:57:19.19 14.05 13.62 13.46 15.54 226.02 241.064060 09:59:54.375 +30:03:52.05 13.84 13.54 13.51 15.16 243.27 240.063598 09:59:37.069 +29:58:13.61 11.81 11.18 10.96 14.65 316.36 240.063609 10:00:09.784 +29:54:57.57 10.40 9.82 9.70 11.83 328.07 241.064055 09:59:39.456 +30:03:41.81 12.33 11.94 11.87 13.37 346.95 241.064069 10:00:17.548 +30:04:30.73 12.35 12.05 12.01 13.29 353.87

Last updated 11 July 2007 by Doug Mink

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