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Description Catalog Data Default Radius (arcmin) Mission Table Type
Sloan Digital Sky Survey Quasar Catalog (Twelfth Data Release: DR12Q) sdssquasarN
1
 SDSS Object

1. Enter any constraints on the query below. [ Help on constraint syntax ]

(What about wildcards, spaces, and case sensitivity?)

2. To change the fields that are returned, select the box in the "View" column beside each field desired.

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 Parameter (Unit) Min Value Max Value Value Type
name SDSS J000000.45+174625.4 SDSS J235959.98+344449.6 string
ra 00 00 00.456 23 59 59.986 position
dec -10 59 29.95 +68 43 36.54 position
vi_redshift 0.040969 6.440000 float
rmag (mag) 0.000000e+00 2.658420e+01 float
rmag_error (mag) 0.000000e+00 1.907440e+01 float
gmag (mag) 0.000000e+00 2.631920e+01 float
gmag_error (mag) 0.000000e+00 2.076790e+01 float
abs_imag (mag) -47.225342 -15.140466 float
xmm_best_fb_flux (erg/s/cm^2) 0.000000e+00 1.452070e-11 float
xmm_best_fb_lx (erg/s) 0.000000e+00 1.135590e+47 float
orig_name SDSS J000000.45+174625.4 SDSS J235959.98+344449.6 string
lii (degree) 0.001014 359.999238 float
bii (degree) -71.770736 89.973368 float
thing_id -1 553535811 integer
spect_plate_number 3586 7517 integer
spect_date 2009-12-11 2014-06-29 date
spect_fiber_number 1 1000 integer
pipeline_redshift -0.004941 7.011245 float
pipeline_redshift_error -6.000000 18095.701172 float
pipeline_redshift_flag 0 646 integer
pca_redshift -1.000000 5.411926 float
pca_redshift_error -1.000000 0.042338 float
pca_continuum_quality -1.0000e+00 2.9210e+09 float
c_iv_redshift 1.4503 5.0427 float
c_iii_redshift 0.9923 3.9769 float
mg_ii_redshift 0.3015 2.3942 float
morphology_flag 0 1 integer
boss_ts_flag 1 9895605321728 string
anc_ts_flag_1 1 9015995347763200 string
anc_ts_flag_2 1 9007199254740992 string
eboss_ts_flag 0 8589934592 string
number_boss_spectra 0 32 integer
sdss_dr7_quasar_flag 0 1 integer
sdss_dr7_plate_number 266 2974 integer
sdss_dr7_spect_date 2000-03-05 2008-07-06 date
sdss_dr7_fiber_number 1 640 integer
uniform_sample_flag 0 2 integer
spectral_index -112.5816 43.8017 float
snr_overall 0.6307 112.8675 float
snr_1700_angstrom 0.0833 102.3878 float
snr_3000_angstrom 0.3653 117.1068 float
snr_5150_angstrom 0.3923 95.5561 float
c_iv_fwhm (km/s) 3.5003 42199.4944 float
c_iv_blue_hwhm (km/s) 0.5519 27032.5380 float
c_iv_red_hwhm (km/s) 0.3695 19517.4518 float
c_iv_amplitude -3.2837 127.8631 float
c_iv_rf_ew (Angstrom) -4.0965280e+05 1.0041820e+08 float
c_iv_rf_ew_error (Angstrom) -1.0000000e+00 1.6309650e+08 float
c_iii_fwhm (km/s) 13.6195 30778.6330 float
c_iii_blue_hwhm (km/s) 0.0059 13991.6515 float
c_iii_red_hwhm (km/s) 1.2552 17562.9901 float
c_iii_amplitude -1.2958 44.0750 float
c_iii_rf_ew (Angstrom) -8.2509310e+16 7.4631740e+08 float
c_iii_rf_ew_error (Angstrom) -1.0000000e+00 1.8618060e+17 float
mg_ii_fwhm (km/s) 13.2431 27459.5205 float
mg_ii_blue_hwhm (km/s) 0.0074 5436.4701 float
mg_ii_red_hwhm (km/s) 1.1780 22042.2975 float
mg_ii_amplitude -5.3748 57.6908 float
mg_ii_rf_ew (Angstrom) -7.2232720e+04 5.9228960e+06 float
mg_ii_rf_ew_error (Angstrom) -1.0000000e+00 2.4119990e+07 float
bal_vi_flag 0 1 integer
c_iv_trough_bi (km/s) 0.0000 24967.6182 float
c_iv_trough_bi_error (km/s) 0.0000 24438.9428 float
c_iv_trough_ai (km/s) 0.0000 20524.6808 float
c_iv_trough_ai_error (km/s) 0.0000 24007.6053 float
c_iv_trough_chi2 0.0000 22304.7930 float
c_iv_troughs_2k_num -1 5 integer
c_iv_troughs_2k_min_vel (km/s) -1.0000 23023.1696 float
c_iv_troughs_2k_max_vel (km/s) -1.0000 25000.0000 float
c_iv_troughs_450_num 0 17 integer
c_iv_troughs_450_min_vel (km/s) -1.0000 24547.1226 float
c_iv_troughs_450_max_vel (km/s) -1.0000 28000.0000 float
si_iv_trough_rf_ew (Angstrom) -1.0000 70.7185 float
c_iv_trough_rf_ew (Angstrom) -1.0000 78.3263 float
al_iii_trough_rf_ew (Angstrom) -1.0000 54.1801 float
imaging_run_number 0 8162 integer
imaging_date 1858-11-17 2009-11-18 date
phot_proc_rerun_number 301 301 string
camera_column_number 0 6 integer
field_number 0 862 integer
object_number 1237645942898230097 1237680531356582786 string
flux_u_band (nmaggy) -1.655550e+00 2.013670e+03 float
flux_g_band (nmaggy) -2.433430e-01 1.745990e+03 float
flux_r_band (nmaggy) -5.962640e-01 1.647140e+03 float
flux_i_band (nmaggy) -3.109210e+01 2.309650e+03 float
flux_z_band (nmaggy) -2.947060e+00 1.776590e+03 float
flux_u_band_iv (nmaggy) 0.000000 232.238373 float
flux_g_band_iv (nmaggy) 0.000000 645.818481 float
flux_r_band_iv (nmaggy) 0.000000 114.879303 float
flux_i_band_iv (nmaggy) 0.000000 68.983315 float
flux_z_band_iv (nmaggy) 0.000000 6.678651 float
umag (mag) 0.000000e+00 2.732440e+01 float
umag_error (mag) 0.000000e+00 1.928850e+02 float
imag (mag) 0.000000e+00 2.995530e+01 float
imag_error (mag) 0.000000e+00 2.392490e+06 float
zmag (mag) 0.000000e+00 2.439010e+01 float
zmag_error (mag) 0.000000e+00 5.178350e+01 float
target_flux_u_band (nmaggy) -1.655550e+00 2.598600e+02 float
target_flux_g_band (nmaggy) -2.433430e-01 3.795880e+02 float
target_flux_r_band (nmaggy) 2.331290e-05 4.625240e+02 float
target_flux_i_band (nmaggy) -1.869330e-05 5.280940e+02 float
target_flux_z_band (nmaggy) -1.365580e+00 6.369020e+02 float
gi_color_offset (mag) -9.804717 5.896882 float
gal_ext_u_band (mag) 0.011957 2.199055 float
gal_ext_g_band (mag) 0.008798 1.618044 float
gal_ext_r_band (mag) 0.006381 1.173540 float
gal_ext_i_band (mag) 0.004839 0.889860 float
gal_ext_z_band (mag) 0.003431 0.630922 float
sf_gal_ext_u_band (mag) 0.009832 1.729781 float
sf_gal_ext_g_band (mag) 0.007661 1.347833 float
sf_gal_ext_r_band (mag) 0.005300 0.932425 float
sf_gal_ext_i_band (mag) 0.003939 0.692892 float
sf_gal_ext_z_band (mag) 0.002930 0.515384 float
log_nh_gal (log(cm^-2)) 21.7078 22.3820 float
var_flag 0 168 integer
var_chi2 0.00 8328.38 float
var_sfpar_a 0.00000 4.91167 float
var_sfpar_gamma -0.10000 10.00000 float
rass_log_count_rate (log(ct/s)) 0.0043 4.3380 float
rass_snr 0.7422 36.1722 float
sdss_rass_offset (arcsec) 0.0000 29.8943 float
number_xmm_detections -1 15 integer
xmm_best_fb_flux_error (erg/s/cm^2) 0.000000e+00 7.948000e-13 float
xmm_best_sb_flux (erg/s/cm^2) 0.000000e+00 5.946330e-12 float
xmm_best_sb_flux_error (erg/s/cm^2) 0.000000e+00 5.364740e-14 float
xmm_best_hb_flux (erg/s/cm^2) 0.000000e+00 8.568240e-12 float
xmm_best_hb_flux_error (erg/s/cm^2) 0.000000e+00 3.574550e-12 float
xmm_mean_fb_flux (erg/s/cm^2) 0.000000e+00 1.452070e-11 float
xmm_mean_fb_flux_error (erg/s/cm^2) 0.000000e+00 7.948000e-13 float
xmm_best_sb_lx (erg/s) 0.000000e+00 8.764230e+46 float
xmm_best_hb_lx (erg/s) 0.000000e+00 1.135590e+47 float
xmm_mean_fb_lx (erg/s) 0.000000e+00 3.434810e+46 float
xmm_best_hb_flux_flag -1 1 integer
sdss_xmm_offset (arcsec) 0.0000 4.9783 float
galex_match_flag 0 1 integer
galex_fuv_flux (nmaggy) -1.0692 1317.9514 float
galex_fuv_flux_iv (nmaggy^-2) 0.0001 68407.7299 float
galex_nuv_flux (nmaggy) -1.2690 1234.5887 float
galex_nuv_flux_iv (nmaggy^-2) 0.0001 52175.7027 float
jmag (mag) 14.7100 18.5510 float
jmag_error (mag) 0.0000 0.2790 float
jmag_snr 0.0000 45.5000 float
jmag_flag 0 6 integer
hmag (mag) 13.6840 17.7080 float
hmag_error (mag) 0.0000 0.4820 float
hmag_snr 0.0000 50.1000 float
hmag_flag 0 2 integer
kmag (mag) 12.6530 17.0890 float
kmag_error (mag) 0.0000 0.3460 float
kmag_snr 0.0000 68.4000 float
kmag_flag 0 6 integer
sdss_2mass_offset (arcsec) 0.0000 1.9538 float
wise_w1_mag (mag) 0.0000 19.2500 float
wise_w1_mag_error (mag) 0.0000 0.5430 float
wise_w1_snr -0.7000 49.7000 float
wise_w1_chi2 0.0000 57.6000 float
wise_w2_mag (mag) 0.0000 18.1970 float
wise_w2_mag_error (mag) 0.0000 0.5430 float
wise_w2_snr -11.2000 57.3000 float
wise_w2_chi2 0.0000 56.5900 float
wise_w3_mag (mag) 0.0000 13.6730 float
wise_w3_mag_error (mag) 0.0000 0.5430 float
wise_w3_snr -10.7000 91.6000 float
wise_w3_chi2 0.0000 299.8000 float
wise_w4_mag (mag) 0.0000 10.1690 float
wise_w4_mag_error (mag) 0.0000 0.5430 float
wise_w4_snr -8.6000 49.6000 float
wise_w4_chi2 0.0 0.0 float
wise_cc_flag 0000 hhhh string
wise_ph_flag AAAA UBUU string
sdss_wise_offset (arcsec) 0.0000 2.0000 float
ukidss_match_flag 0 1 integer
ukidss_flux_y_band (W/m^2/Hz) -4.818450e-30 1.179950e-29 float
ukidss_flux_y_band_error (W/m^2/Hz) 0.000000e+00 6.662130e-30 float
ukidss_flux_j_band (W/m^2/Hz) -3.458730e-30 8.610050e-30 float
ukidss_flux_j_band_error (W/m^2/Hz) 0.000000e+00 1.316970e-30 float
ukidss_flux_h_band (W/m^2/Hz) -2.771980e-30 2.383940e-29 float
ukidss_flux_h_band_error (W/m^2/Hz) 0.000000e+00 2.413380e-30 float
ukidss_flux_k_band (W/m^2/Hz) -1.463050e-30 1.768510e-29 float
ukidss_flux_k_band_error (W/m^2/Hz) 0.000000e+00 2.755400e-30 float
first_match_flag 0 1 integer
flux_20_cm (mJy) 0.7500 14774.4199 float
snr_20_cm 5.0011 8357.0265 float
sdss_first_offset (arcsec) 0.0000 1.9972 float

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(e.g. 'Cyg X-1' or '12 00 00, 4 12 6')
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5.


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