Type | Galaxy |
---|---|
Magnitude | 15.7 |
Size | 0.513' x 0.267' @ 120° |
Right Ascension | 15h 35' 54.0" (2000) |
Declination | 39° 48' 51" N |
Constellation | Boötes |
Harold Corwin
Javelle got confused in the middle of his observation about his comparison star, so he used BD +40 2905 for the RA offset and BD+40 2903 for the Dec offset (he claimed to have used BD+40 2903 for this object). For the other object he found on the same night near the same stars, IC 4563, he used only BD+40 2905. Both stars, by the way, have very high proper motions at nearly half an arcsecond per year, among the highest I've seen for comparison stars. Javelle, of course, did not know that.― IC Notes by Harold Corwin
HD 139323 | HD 139341 | IC 4557 |
IC 4563 | Mu Coronae Borealis | |
Phi Boötis |
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
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