| Richard Harshaw | ||||
| Star: 99 Her
Location of site: Northern Kansas City, Missouri (USA). 94d 30m west longitude, 39d 15m north latitude 980 ft above Mean Sea Level Date of observations (UT): 29 May, 2000; 0330 hours Site classification: suburban Sky conditions: Seeing-- 8 out of 10 (long periods of 10!!) Transparency-- 8 out of 10 Limiting visual magnitude-- 4.5 Telescope: Celestron C-8 Eyepiece: 10mm Ortho (211x) |
Magnitudes: 5.2 (F8V), 10.7 (K4V)
Sep/PA's: 93/53 (PA decreasing) Year of last measurement: 1961 Distance (light years): 51 Luminosity (in suns): 1.7 Viewed with a diffraction mask, which only sharpened the image of A and was no aid in seeing C, which was so far away it needed no assistance. The C star is very, very faint, though. Here is a wonderful study in stellar spectra contrasts. Boht stars are Main Sequence dwarfs, but the F8 star is 5.5 magnitudes brighter than the K4-- a difference of some 160 or so in brilliance. I noted colors of Yellowish-white and Yellow. The pair lies in
a moderately rich field.
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| Ilario Melandri | ||||
| Star:
99 Her
Date & Time: 8 June 2000 – 21.25 UTC Seeing: 8 <1-10 Seeing Scale (10 best)> Location of site: Italy, Ravenna, San Romualdo, Lat 44 32’N Lon 12 08’E Elevation: 0 m Site classification: Rural Sky darkness: 4.5 <Limiting magnitude> Temperature: +19C Telescope: 150 mm f/15 achromatic refractor (lens by Romano Zen, Venice). Magnification: 140 x (eyepiece Clave Plossl 16 mm) |
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| John M. Ryan | ||||
| Star:
99 Her
Date of Observation: 11/06/00 21:45UT Location of Observation: Ciudad Rodrigo, Salamanca, Spain 40º 36' N, 6º 32'W, Elev. 800 Meters Seeing: 5 to 6 (1 - 10, 10 best) Site classification: Urban Limiting Mag. (naked eye): 3.5 Moon 5/8 full Transparency: 7 to 8 Instrument: Meade 8"SCT Magnification: 100X and 167X |
Separation (Clear or Touching):Clear
Magnitude Comment: Secondary much dimmer in accordance with the data. Color Comment: Both white Very wide pair. Not in the same class as 100 Herculis for beauty.
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| Tim Leese | ||||
| Star:
99 Her
Date & Time: 16/17 June 2000 22:00 UT – 01:00UT Seeing: 5-4 deteriorating <1-10 Seeing Scale (10 best)> Location of site: Cheshire. UK 53° 15' N –2º 33' W Site classification: Suburban Sky darkness: Not measured Full moon, twilight Telescope: 200mm f/6 Newtonian scope on Vixen GP mount (manual slow motion). Any Quoted PA or SEP are estimates. Magnification: 120x, 240x
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Using X120 I was unable to see the faint secondary star
but at X240, using averted vision I located the secondary at the published
position.
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| Pino Bandini | ||||
| Star: 99 Her
Location of site: Ravenna, Italy Date of observations (UT): 18 June 2000 – 21.05 UTC Site classification: Urban Sky conditions: Seeing: 5 (10 best) Temperature: 24C Limiting visual magnitude: -- Telescope: Celestron C8 Magnification: 81 x (eyepiece Plossl 25 mm) + diagonal |
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