Title: WIYN Open Cluster Study. XVII. Astrometry and Membership to V=21 in NGC 188 Authors: Platais I., Kozhurina-Platais V., Mathieu R.D., Girard T.M., van Altena F. Table: Catalog of positions, proper motions, and BV CCD photometry in the region of open cluster NGC 188 ================================================================================ Byte-by-byte Description of file: datafile3.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 4 I4 --- ID Object identifier 6- 15 F10.7 deg RAdeg Right Ascension expressed in decimal degrees (1) 17- 26 F10.7 deg DEdeg Declination expressed in decimal degrees (1) 28- 33 F6.2 mas/yr PMx Proper motion in Right Ascension multiplied by cos(DE) (2) 35- 40 F6.2 mas/yr PMy Proper motion in declination (2) 42- 45 F4.2 mas/yr e_PMx Standard error in PMx 47- 50 F4.2 mas/yr e_PMy Standard error in PMy 52- 53 I2 --- Num Initial number of photographic plates and CCD frames used for astrometry 55- 56 I2 --- o_PMx Number of deleted datapoints in RA astrometric solution 58- 59 I2 --- o_PMy Number of deleted datapoints in DE astrometric solution 61- 62 I2 % MProb Membership probability (3) 64- 69 F6.3 mag V The CCD V band magnitude 71- 76 F6.3 mag B-V The (B-V) color index from CCD photometry (4) 78- 79 I2 --- Num-V Number of V CCD frames 81- 82 I2 --- Num-B Number of B CCD frames 84- 88 F5.3 mag errV Estimated standard deviation in V magnitude 90- 94 F5.3 mag errB Estimated standard deviation in B magnitude 96- 96 A1 --- ICode Internal classification code (5) 98-101 A4 --- ID-D96 Cross-identification with Dinescu et al. 1996,AJ,111,1205 103-109 A7 --- ID-S62 Cross-identification with Sandage 1962,ApJ,135,333 111-117 F7.2 yr epRA Mean epoch of RA position 119-123 F5.1 mas e_RAdeg Standard error in RA multiplied by cos(DE) 125-131 F7.2 yr epDE Mean epoch of DE position 133-137 F5.1 mas e_DEdeg Standard error in DE -------------------------------------------------------------------------------- Note (1): For the epoch 2000.0 degrees and in the ICRS reference system (i.e. equinox J2000.0). Note (2): A proper motion equal to exact zero in both coordinates is set for extremely poor measurements. Note (3): -1 = the probability has not been calculated. Note (4): -0.500 = unknown B-V. Note (5): G = galaxy (only `astrometric' galaxies marked); D = visual binary with separation less than 5". --------------------------------------------------------------------------------