Object: (737) Arequipa
Event Date: 19 April 2015 UT
Observation Window: 04:55-04:59 UT
RA: 13:36:09 (equinox of date)
RA: 13:35:19.7 (J2000)
Star Magnitude: 9.7
Magnitude Drop: 2.8
Moon Phase: 0%
Moon Distance: 168 degrees
Additional information on this event is available here.
Given that the predicted shadow path lies far south of Pasco, this appulse event will not result in an actual occultation. During the half hour before and after the appulse, we should be able to see the asteroid approach, merge with, and than move passed the target star.
Either before or after the event, you should make a short recording of your position information using the switch on the front of the IOTA-VTI box. Adjust the switch to POSITION, record the screen showing your latitude/longitude for 3-5 seconds, and then adjust the switch back to TIME.
Thank you for keeping track of your observations using the RECON Observation Logsheet.
Star Training Set
Star training set for Arequipa, 2015/04/19 04:57 UT Object RA Dec mag sep mel Spica 13:26:00.1 -11:14:27 1.0 9.04 169 79Zet Vir 13:35:28.4 -00:40:25 3.4 1.89 166 PPM 179075 13:33:44.6 -02:30:09 8.2 0.60 167 PPM 179084 13:36:00.7 -02:39:05 9.0 0.10 168 PPM 179085 13:36:07.1 -02:33:27 10.2 0.00 168 Arequipa 13:36:07.1 -02:33:27 9.7 168 Positions are for equinox of date
The following chart was generated using the AAVSO Variable Star Plotter. Note that we have changed the orientation of the map so that it will match what you will see using the MallinCAM connected to the telescope with a diagonal. For the remainder of the project, we intend to provide star charts using this orientation.
Images of Star Field
Below is an image of the star field taken by John Keller at sense-up of x128.
Here is the same star field rotated so that north is up.
Following the event, please complete a RECON Event Report.