\ 2MASS LGA, T. Jarrett \ Radial Surface Brightness: ngc4491 \ Axis Ratio & Position Angle: 0.47 -34.5 \ Column Key: \ rmid == semi-major axis (arcsec) \ JHKmean == annulus mean surface brightness (dn per arcsec^2) \ JHKsdev == RMS in JHKmean \ JHKmedian == annulus median surface brightness (dn per arcsec^2) \ JHKmag == annulus median surface brightness (mag per arcsec^2) \ JHKimag == annulus median surface brightness, inclination corrected (mag per arcsec^2) \ J-K == median surface brightness color (mag per arcsec^2) | rmid | Jmean | Jsdev | Jmedian | Jmag | Jimag | Hmean | Hsdev | Hmedian | Hmag | Himag | Kmean | Ksdev | Kmedian | Kmag | Kimag | J-K | 2.500 19.7566 1.7936 20.7164 17.424 18.244 28.4422 3.9719 29.2720 16.689 17.509 24.8195 4.1599 25.1484 16.340 17.160 1.084 4.000 15.8257 2.0256 14.8348 17.786 18.606 22.5445 3.5228 22.4019 16.980 17.799 19.4917 3.4162 20.5139 16.562 17.381 1.224 5.500 12.9977 1.4556 12.3380 17.987 18.806 18.4750 3.2595 18.8170 17.169 17.989 14.9812 2.9026 15.7307 16.850 17.670 1.137 7.000 10.7593 1.2051 11.1152 18.100 18.920 15.4091 3.0349 15.8262 17.357 18.177 11.1114 3.2399 12.5509 17.095 17.915 1.005 8.500 9.4799 1.2876 9.7837 18.238 19.058 13.0602 2.3793 13.1918 17.555 18.374 9.7647 2.1822 10.6624 17.272 18.092 0.966 10.000 8.1812 1.3144 8.0612 18.449 19.268 10.9592 2.0965 10.8636 17.765 18.585 8.9859 1.7727 9.1302 17.440 18.260 1.009 11.500 7.4002 1.2613 7.6078 18.512 19.331 9.4835 1.9180 9.0077 17.969 18.789 7.8959 2.0033 7.9573 17.590 18.410 0.922 13.000 6.7628 1.2403 6.7127 18.647 19.467 8.1844 1.7804 8.0262 18.094 18.914 6.7395 1.7158 6.8368 17.755 18.574 0.892 14.500 6.0729 1.2674 6.0854 18.754 19.574 7.2929 1.4868 7.4361 18.177 18.997 6.0796 1.5170 6.1892 17.863 18.682 0.891 16.000 5.2275 1.2570 5.1349 18.938 19.758 6.4749 1.3449 6.3479 18.349 19.168 5.2515 1.5383 5.3911 18.013 18.832 0.925 17.500 4.7682 1.3057 4.7098 19.032 19.852 5.7675 1.3346 5.5135 18.502 19.321 4.6176 1.5175 4.5743 18.191 19.011 0.841 19.000 4.3215 1.3206 3.9630 19.220 20.039 5.5618 1.5163 5.1496 18.576 19.396 4.1330 1.3771 3.9090 18.362 19.181 0.858 20.500 3.9905 1.0917 3.8445 19.253 20.072 5.3160 1.4604 5.2181 18.562 19.381 3.7883 1.2162 3.9443 18.352 19.172 0.901 22.038 3.5758 0.7802 3.5598 19.336 20.156 4.7426 1.3909 5.0045 18.607 19.427 3.7257 1.4321 3.9987 18.337 19.157 0.999 23.690 3.3223 0.6381 3.2419 19.438 20.257 4.3050 1.3550 4.3662 18.755 19.575 3.3653 1.2432 3.5190 18.476 19.295 0.962 25.467 3.0708 0.6700 3.0648 19.499 20.318 3.8419 1.3285 3.8197 18.900 19.720 2.9048 1.0455 2.8233 18.715 19.535 0.784 27.377 2.6523 0.7283 2.5952 19.679 20.499 3.4094 1.2840 3.3855 19.031 19.851 2.4454 1.0755 2.5359 18.831 19.651 0.848 29.430 2.3108 0.6150 2.2902 19.815 20.635 2.8288 1.1913 2.7796 19.245 20.065 1.9160 1.0356 1.9652 19.108 19.928 0.707 31.638 1.9316 0.6098 1.9172 20.008 20.828 2.4378 0.9925 2.3981 19.406 20.225 1.7249 1.1083 1.6705 19.285 20.104 0.723 34.011 1.5230 0.6529 1.5367 20.248 21.068 1.8565 0.9930 1.9800 19.614 20.433 1.1920 1.1639 1.2992 19.558 20.377 0.690 36.561 1.2327 0.6298 1.2620 20.462 21.282 1.4491 1.0465 1.5162 19.903 20.723 1.0735 1.2056 1.0214 19.819 20.638 0.643 39.303 1.0117 0.7570 1.0261 20.687 21.506 1.2773 0.9295 1.3127 20.060 20.880 0.9407 1.1875 0.8698 19.993 20.813 0.694 42.251 0.8677 0.7988 0.9644 20.754 21.574 1.1948 1.1289 1.2598 20.105 20.924 0.7961 1.1584 0.7627 20.136 20.956 0.618 45.420 0.7508 0.6136 0.7222 21.068 21.888 1.0000 1.1506 0.7870 20.615 21.435 0.9210 1.2117 0.8659 19.998 20.818 1.070 48.826 0.5935 0.6611 0.5803 21.306 22.125 0.6400 1.0191 0.6780 20.777 21.597 0.8019 1.0707 0.7889 20.099 20.919 1.207 52.488 0.5303 0.6485 0.5565 21.351 22.171 0.4048 1.0507 0.5083 21.090 21.910 0.2434 1.2709 0.1030 22.310 23.130 -0.959 56.425 0.3593 0.7529 0.3736 21.784 22.603 0.4768 1.0747 0.5520 21.000 21.820 0.4148 1.1812 0.3919 20.859 21.679 0.925 60.657 0.3078 1.0329 0.1833 22.557 23.377 0.3884 1.3281 0.3324 21.551 22.371 0.4517 1.4065 0.3017 21.143 21.963 1.414 65.206 0.2656 0.8663 0.2020 22.451 23.271 0.4383 1.3562 0.3260 21.572 22.392 0.1556 1.3243 0.1317 22.043 22.863 0.408 70.097 0.3323 0.5854 0.3011 22.018 22.838 0.2143 1.0939 0.1133 22.720 23.539 0.1645 1.0135 0.1325 22.036 22.856 -0.018 75.354 0.1660 0.6768 0.1874 22.533 23.353 0.2714 1.1173 0.2069 22.066 22.886 0.3195 1.1865 0.2797 21.225 22.045 1.308 81.006 0.1164 0.7093 0.0959 23.260 24.079 0.1982 1.0831 0.1853 22.185 23.005 0.2513 1.1694 0.2150 21.511 22.330 1.749