ssky2k Examples

Example 1. Search with results to standard output

Find the 10 brightest SKY2000 Catalog Stars in 1-degree square box centered on 10:00:00 +30:00:00 J2000 and sort them by magnitude.: ssky2k -hn 10 -r -1800 10:00:00 +30:00:00 J2000
produces the following: ssky2k WCSTools 3.6.9, 5 July 2007, Doug Mink SAO SKY2000 10:00:00.000 +30:00:00.00 J2000 +- +00:34:38.5 +00:30:00.0 at epoch 2000.0000 SKY_id RA2000 Dec2000 MagB MagV MagPh MagPv Type Arcsec 0959101 09:59:36.214 +29:38:42.84 6.80 5.75 5.70 5.90 K0 1314.14 0958090 09:58:29.830 +29:32:03.97 9.01 8.02 9.00 8.20 K0 2046.34 0959022 09:59:07.129 +30:25:18.96 9.54 8.24 9.30 8.10 K0 1666.41 0958058 09:58:19.171 +29:55:34.90 10.09 9.23 10.00 8.50 G5 1336.84 0959063 09:59:19.889 +30:00:27.48 10.37 9.88 10.10 8.90 F8 521.76 0959048 09:59:15.758 +29:52:46.97 10.46 9.21 10.20 8.80 K0 719.88 1000127 10:00:52.274 +30:12:16.52 10.53 9.64 10.40 8.90 K0 1001.31 0959046 09:59:15.281 +30:15:24.19 10.61 10.09 10.40 8.80 F5 1091.20 0958187 09:58:33.628 +30:17:11.58 11.47 10.43 11.30 9.30 K0 1522.96

Example 2. Search with results to a file

Find all SKY2000 Catalog stars within 40 arcminutes of M51 and write the results, sorted by right ascension, to a Starbase file: ssky2k -jwtr 2400 -s r -o m51 13:27:48.311 +47:27:28.98 B1950
produces the following in the file m51.sky2k: catalog SKY2000 ra 13:29:54.687 dec +47:12:01.58 radecsys fk5 equinox 2000.0000 epoch 2000.0000 rpmunit mas/year dpmunit mas/year radsec 2400.00 catsort ra program ssky2k WCSTools 3.6.9, 5 July 2007, Doug Mink SAO sky_id ra dec magb magv magph magpv type pmra pmdec arcsec ------- ------------ ------------ ----- ----- ----- ----- ---- ------ ------ ------ 1326078 13:26:36.732 +47:25:22.68 10.22 9.62 10.00 8.80 F8 20.7 -36.7 2166.76 1327049 13:27:17.842 +46:49:14.48 9.79 9.15 9.70 8.60 F8 -65.5 37.0 2107.70 1327104 13:27:45.865 +47:45:30.48 10.28 9.18 10.10 8.20 K0 9.8 -35.9 2396.08 1329005 13:29:01.514 +47:50:50.28 7.46 7.06 7.30 7.10 F5 -42.1 10.4 2390.17 1331005 13:31:01.750 +47:42:29.88 10.18 9.61 10.00 8.80 F8 -26.5 -10.0 1950.73 1331135 13:31:56.347 +47:14:04.00 7.29 7.08 7.00 6.90 A5 33.2 1.0 1245.53

Example 3. Find the closest star

Find the closest SKY2000 Catalog Star to 10:00:00 +10:00:00 B1950.: ssky2k -ahr 3600 10:00:00 +10:00:00 B1950
produces the following: ssky2k WCSTools 3.6.9, 5 July 2007, Doug Mink SAO Find closest star SKY2000 10:00:00.000 +10:00:00.00 B1950 r= +01:00:00.0 at epoch 1950.0000 SKY_id RA1950 Dec1950 MagB MagV MagPh MagPv Type Arcsec 1002147 10:00:10.486 +10:09:31.17 11.12 10.02 10.50 0.00 K0 591.79

Example 4. List selected stars from catalog

List SKY2000 Catalog stars 100001 through 100010: ssky2k -h 100001.-100010. (Note use of decimal points)
produces the following: ssky2k WCSTools 3.6.9, 5 July 2007, Doug Mink SAO SKY_id RA2000 Dec2000 MagB MagV MagPh MagPv Type 0100001 00:59:59.691 +48:01:11.85 7.03 7.15 7.00 7.00 B8 0100002 01:00:00.369 +48:09:34.08 10.46 9.47 10.50 0.00 G5 0100003 00:59:59.917 -51:20:35.77 10.13 9.31 10.40 9.20 K0 0100004 00:00:00.000 +00:00:00.00 10.52 9.51 10.00 9.10 0100005 01:00:02.846 +00:22:49.60 9.14 8.75 9.20 8.90 K0 0100006 01:00:02.654 +43:50:27.41 9.86 8.66 9.80 8.50 F5 0100007 01:00:02.655 +53:04:49.42 11.37 10.99 10.80 0.00 K0 0100008 01:00:03.360 +03:51:57.57 7.84 7.37 0.00 7.20 F2 0100009 01:00:03.689 -02:01:08.50 8.06 7.09 7.70 7.20 F5
List the 100001st through 100010th SKY2000 Catalog stars: ssky2k -h 100001-100010 (Note lack of decimal points)
produces the following: ssky2k WCSTools 3.6.9, 5 July 2007, Doug Mink SAO SKY_id RA2000 Dec2000 MagB MagV MagPh MagPv Type 0806144 08:06:37.672 -22:22:11.66 9.31 9.31 8.90 9.20 A2 0806145 08:06:40.121 +73:33:59.52 8.95 8.76 8.70 9.20 A3 0806146 08:06:39.466 -43:25:14.38 10.06 9.15 9.60 9.20 G5 0806147 08:06:38.288 -43:35:57.73 8.61 8.66 8.20 9.00 B9 0806148 08:06:38.377 -05:38:11.64 10.00 9.50 0.00 9.00 G0 0806149 08:06:38.558 +01:55:46.48 9.15 8.70 8.60 8.40 F5 0806150 08:06:39.266 +16:18:25.21 0.00 10.14 10.70 0.00 F5 0806151 08:06:39.216 -17:17:50.05 8.51 7.74 0.00 8.00 G5 0806152 08:06:39.799 +06:31:43.39 10.65 9.61 10.40 8.70 K0 0806153 08:06:39.951 +32:09:55.14 9.41 9.00 9.40 9.10 F8

Example 5. Match stars in input catalog

Match the stars in the input catalog test.tab to the SKY2000 Catalog and list them one match per line.

ssky2k -l @test.tab

produces the following:

240020 22:15:54.555 -11:36:56.13  9.80  __  2216088 22:16:28.472 -11:39:57.12 10.22  9.24  0.00  9.30 K0   -22.0  -24.6 29   498.29  -180.99   530.14
267313 17:47:51.210 -22:58:17.35  9.10  A0  1747167 17:47:51.194 -22:58:17.27  9.14  8.82  8.40  9.20 A0    -1.2  -11.2 53    -0.22     0.08     0.24
196784 13:42:07.204 -09:06:40.06  8.60  K0  1342021 13:42:07.203 -09:06:40.06  9.40  8.50  0.00  8.30 K0    12.0  -13.0 34    -0.02    -0.00     0.02
127373 10:24:43.528 +11:21:21.15 10.20  K0  1024106 10:24:43.507 +11:21:21.52 10.57  9.41 10.20  8.90 K0    -7.5   -8.5 31    -0.31     0.37     0.48
095438 06:07:46.792 +23:28:44.76 10.30  K0  0607182 06:07:46.841 +23:28:44.96 10.19  9.28 10.40  9.00 K0    -2.1   -1.8 99     0.67     0.20     0.70

where the columns are input catalog star name, RA, Dec, magnitude, spectral type, SKY2000 number, RA, Dec, 4 magnitudes, proper motion, spectral type, number of stars in the 5000-arcsec-radius default search radius, and catalog - search dra, ddec, and dr (in arcseconds).