The Occultation of a 11.7 Star by (72) Feronia

Sun morn Feb 9 at 2:07:46am

OWc page

 

This is an easy, bright event, visible from Pt Reyes to Salinas, and centerline not too far north of Karl. Duration is 6.2s. Odds still excellent in Santa Cruz and SC Mtns south of Karl. Drop=2.0 mag.

Altitude is low, though, at 20 degrees Az=130 in the SE. 14 degrees below/left of Spica, and a bit above/right of the top star in Libra's scales outline.

 

     

 

Results:

Richard Nolthenius

I parked and observed from just east of the bush on the airfield side of Sunlit lane, in the gravel. Skies were clear with no indication of cloud, nor wind. Integration 2x, gamma=1.

Start: 10:05:19UT, End=10:09:27 UT

magDrop report: percentDrop: 86.0 magDrop: 2.136 +/- 0.152 (0.95 ci)

DNR: 3.14

D time: [10:07:43.8677]
D: 0.6800 containment intervals: {+/- 0.0096} seconds
D: 0.9500 containment intervals: {+/- 0.0272} seconds
D: 0.9973 containment intervals: {+/- 0.0585} seconds

R time: [10:07:48.8530]
R: 0.6800 containment intervals: {+/- 0.0096} seconds
R: 0.9500 containment intervals: {+/- 0.0272} seconds
R: 0.9973 containment intervals: {+/- 0.0585} seconds

Duration (R - D): 4.9853 seconds
Duration: 0.6800 containment intervals: {+/- 0.0146} seconds
Duration: 0.9500 containment intervals: {+/- 0.0333} seconds
Duration: 0.9973 containment intervals: {+/- 0.0682} seconds

       

 

Kirk Bender

Clear 3 sec event for Feronia on Feb. 9, from home, 2x. There are a few bad timestamps at the beginning of the recording, I'll clean the camcorder and see If I get  bad time stamps next event.

magDrop report: percentDrop: 83.1  magDrop: 1.931  +/- 0.223  (0.95 ci)

DNR: 2.67

D time: [10:07:45.3636]
D: 0.6800 containment intervals:  {+/- 0.0114} seconds
D: 0.9500 containment intervals:  {+/- 0.0335} seconds
D: 0.9973 containment intervals:  {+/- 0.0847} seconds

R time: [10:07:48.5539]
R: 0.6800 containment intervals:  {+/- 0.0114} seconds
R: 0.9500 containment intervals:  {+/- 0.0335} seconds
R: 0.9973 containment intervals:  {+/- 0.0847} seconds

Duration (R - D): 3.1903 seconds
Duration: 0.6800 containment intervals:  {+/- 0.0171} seconds
Duration: 0.9500 containment intervals:  {+/- 0.0429} seconds
Duration: 0.9973 containment intervals:  {+/- 0.0967} seconds

         

 

Karl von Ahnen