2002B II/2B Two-Micron Sky Survey G Neugebauer R B Leighton NASA SP-3047 ??? ??? 1969 1969tmss.book.....N Photometry, infrared Surveys The catalog, giving sources of emission in the 2.2-micrometer region for more than 5000 stars, represents a systematic survey of the Northern Hemisphere for stars brighter than third magnitude. The survey was carried out with a telescope at Mount Wilson, California, having a 62-inch diameter and an f/l aluminized epoxy mirror mounted equatorially. Radiation at an effective wavelength of 2.2 micrometers was detected by a lead sulfide photoconductive cell cooled by liquid nitrogen. In addition to the 2.2-micrometer detector array, radiation at an effective wavelength of 0.84 micrometers was detected by a simple silicon photovoltaic cell. The catalog includes right ascension and declination (B1950.0), K and I magnitudes, number of measurements, V magnitude, spectral types, cross identifications to the numbering systems of the General Catalogue, the Durchmusterung catalogs, the Bright Star Catalogue, and star names.

ID Two-Micron Sky Survey number (TMSS) --- n_ID Remark = 1, if there is a remark; = 0, otherwise --- RAh Right ascension 1950 (hours) h RAm Right ascension 1950 (minutes) min RAs Right ascension 1950 (seconds) s DE- Sign of declination --- DEd Declination 1950 (degrees) deg DEm Declination 1950 (arc minutes) arcmin u_RAs Right ascension 1950 uncertainty --- RAs_X2 Right ascension chi-square s u_DEm Declination 1950 uncertainty --- DEm_X2 Declination chi-square arcmin Kmag K magnitude Ignore if byte 76 = 3 or 4. mag e_Kmag K error (ignore if byte 76 = 3 or 4) mag Kmag_X2 K chi-square Ignore if byte 76 = 3 or 4. mag Imag I magnitude Ignore if I magnitude > 14.0 and/or ignore if byte 76 = 2 or 4. mag e_Imag I error Ignore if I magnitude > 14.0 and/or ignore if byte 73 = 1 and/or ignore if byte 76 = 2 or 4. mag Imag_X2 I chi-square Ignore if I magnitude > 14.0 and/or ignore if byte 73 = 1 and/or ignore if byte 76 = 2 or 4. mag n_Imag I magnitude questionable = 1, if I magnitude is questionable; = 0, otherwise --- KIX2 I and K chi-square excess = 1, if chi-square is not excessive = 2, if I chi-square is excessive = 3, if K chi-square is excessive = 4, if I and K chi-square are excessive --- n_KIX2 I and K scale = 1, if I and K both on scale = 2, if I off scale = 3, if K off scale = 4 if both I and K off scale --- ct_Kmag Number of K measurements ct ct_Imag Number of I measurements ct n_ctmag Remark on K and I counts = 1, if there is a remark; = 0, otherwise --- obs_dates Observational timetable Range of days on which observations were made starting with January 30, 1965, and running through April 7, 1968. d Vmag V magnitude mag SpType Spectral type --- Lum Luminosity class = 2, luminosity class I and II = 3, luminosity class III = 4, luminosity class IV = 5, luminosity class V = 6, luminosity class c = 7, luminosity class g = 8, luminosity class d --- BCS3 HR/BS number The HR/BS number is provided if identified in the Yale Catalog of Bright Stars, Third edition (1964). --- GC GC number The GC number is provided if identified in the Boss General Catalog of 33342 Stars for the Epoch 1950 (1937). --- SAO DM number The DM number is provided if identified in the Smithsonian Astrophysical Observatory (SAO) Star Catalog (1966). --- GCVS Star name The star name is provided if identified in the General Catalog of Variable Stars, Volumes 1 and 2 (1958). --- RAs_SAO RA difference (seconds) These are the position differences, infrared catalog-SAO Star Catalog or, if no SAO identification is avalable, the position difference, infrared catalog-variable star catalog. Note: The data file ordered by increasing right ascension (rasort.dat) is also available. Declination Zones (degrees) Sequential Record Number -33 to -25 1-472 -25 to -15 473-1116 -15 to - 5 1117-1725 - 5 to + 5 1726-2262 + 5 to +15 2263-2807 +15 to +25 2808-3365 +25 to +35 3366-3887 +35 to +45 3888-4435 +45 to +55 4436-4919 +55 to +65 4920-5353 +65 to +75 5354-5555 +75 to +81 5556-5612 s DEm_dif Declination difference (arc min) arcmin RArad Right ascension 1950 (radians) rad DErad Declination 1950 (radians) rad ID Two-Micron Sky Survey number (TMSS) --- o_ID Total number of obs. of this star Up to three observations are listed in one logical record. This number is repeated in each record containing data for this star. --- Kmag K magnitude of star mag std_Kmag Standard deviation of K magnitude mag Imag I magnitude of star Ignore if I magnitude > 14.0. mag std_Imag Standard deviation of I magnitude Ignore if I magnitude > 14.0 or if byte 28 = 1. mag n_Imag I magnitude questionable = 1, if I magnitude is questionable; = 0, otherwise If I magnitude is 1, then the standard deviation given in bytes 24-27 should be ignored. --- JD Julian day no. of obs. minus 2430000 d Kmag2 K magnitude of star If more than one observation is included in this record, the format for bytes 10-32 is repeated as bytes 34-56. mag std_Kmag2 Standard deviation of K magnitude mag Imag2 I magnitude of star Ignore if I magnitude > 14.0. mag std_Imag2 Standard deviation of I magnitude Ignore if I magnitude > 14.0 or if byte 52 = 1. mag n_Imag2 I magnitude questionable = 1, if I magnitude is questionable; = 0, otherwise --- JD2 Julian day no. of obs. minus 2430000 d Kmag3 K magnitude of star If there is a third observation included in this record, the format for bytes 10-32 is repeated as bytes 58-80. mag std_Kmag3 Standard deviation of K magnitude mag Imag3 I magnitude of star Ignore if I magnitude > 14.0. mag std_Imag3 Standard deviation of I magnitude Ignore if I magnitude > 14.0 or if byte 76 = 1. mag n_Imag3 I magnitude questionable = 1, if I magnitude is questionable; = 0, otherwise --- JD3 Julian day no. of obs. minus 2430000 --- ID Two-Micron Sky Survey number (TMSS) --- n_ID Remarks --- Melissa C. Larkin SSDOO/ADC 1997May27The original ADC documentation (1991) by Theresa A. Nagy was used to create this ReadMe file. She also did the original data reformatting. UNKNOWN UNKNOWN The Two-Micron Sky Survey Catalogue by G. Neugebauer and R. B. Leighton was published in 1969 as a National Aeronautics and Space Administration (NASA) special publication (NASA SP-3047). A computer program was written to perform the following operations on the original version of the catalogue: - Convert all "&" to "+" - Concatenate left- and right-hand pages into a single data record per entry - Delete catalogue number from the right-hand page data - Add a sequential counter for each record - Combine all entries from 12 original files into a single file for data in catalogue - Combine all measurements of chi-square excess stars from the 12 original files into a single sequential file - Compute and include right ascension and declination in radians at the end of each record in data file - Combine all remarks from the 12 original files into a single sequential file - Reblock main catalogue from 84 bytes to 17000 - Change logical record length from 84 to 170 to accommodate re-organization II_2B.xml