data from accuweather.com and clear sky clock:
| time (CST) | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| temperature (F) | 60 | 55 | 55 | 53 | 50 | 50 |
| dewpoint (F) | 42 | 37 | 36 | 34 | 32 | 32 |
| humidity (%) | 51 | 51 | 50 | 48 | 49 | 50 |
| w-dir | WNW | NW | NNW | NNW | N | N |
| w-spd (MPH) | 9 | 10 | 11 | 12 | 11 | 10 |
| cloud (clear x/10) | 10 | 10 | 10 | 10 | 10 | 10 |
| transparency x/5 | 5 | 5 | 5 | 5 | 5 | 5 |
| seeing x/5 | 1 | 1 | 1 | 1 | 1 | 2 |
| darkness (lim. mag.) | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 |
Orbital and physical characteristics for computing star charts: http://en.wikipedia.org/wiki/2007_TU24
Starry Night shows 2007 TU24 high in NW around 8pm; also shows it passing in front of open cluster M34 between 8:15pm and 8:25pm. Starry night also computed apparent magnitude (using data from wikipedia) as bright as 9.0. NASA HORIZONS, however, estimates the brightest at 10.5 — quite a bit fainter (and probably more accurate). Poor seeing conditions not going to help, but the rate at which this thing will be moving makes me want to try.
