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(Continued from Page 3)
21 Mon Io occulted 12:10 a.m., eclipse ends 2:32 a.m.
Rosh Ha-Shanah (Jewish New Year 5759, at sunset 6:59 p.m.).
Io transit 9:18 to 11:33 p.m., shadow transit 9:28 to 11:43 p.m.
22 Tue Ganymede transit begins 4:07 a.m., shadow transit begins 4:44 a.m.
Delta Cephei at maximum 10:32 p.m. Variable rises to mag. 3.5 from 4.4 in about 1.5 days.
(Period is 5.366341 days). Compare Zeta Cephei (mag. 3.35) and Epsilon Cephei (mag. 4.2).
Autumnal equinox 10:37 p.m.
23 Wed Io eclipse ends 9:01 p.m.
25 Fri Ganymede eclipse ends 9:53 p.m.
26 Sat Europa transit 3:00 to 5:38 a.m., shadow transit begins 3:31 a.m.
Star party at Sycamore Grove Park (Livermore Park District) 8:00 p.m.
(Wetmore Rd. entrance near Holmes St.).
Galileo flyby of Europa.
27 Sun Io transit begins 4:36 a.m., shadow transit begins 4:54 a.m.
Europa occulted 9:13 p.m., eclipse ends 12:34 a.m.
28 Mon Io occulted 1:54 a.m., eclipse ends 4:27 a.m.
First Quarter Moon 2:11 p.m.
Io transit 11:02 p.m. to 1:17 a.m., shadow transit 11:23 p.m. to 1:38 a.m. (29th).
29 Tue Io occulted 8:20 p.m., eclipse ends 10:56 p.m.
30 Wed Yom Kippur.
Beta Lyrae at minimum 11:04 p.m.
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Planets
Mercury Low in east before sunrise early in the
month. Behind Sun late in the month.
Venus Lost in morning twilight.
Mars Low in east in morning sky.
Jupiter At opposition; up all night.
Saturn Rises in early evening; up nearly all night.
Uranus South in evening sky; sets in early morning.
Neptune South in evening sky; sets in early morning.
Pluto Low in west-southwest in evening sky.
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Messier and Caldwell objects
Cep C4 (reflection neb.), C9 (Cave Neb.)
Lac C16 (open cluster)
Cyg M39 (open cluster), C19 (Cocoon Neb.)
Peg M15 (globular cluster), C30 (galaxy)
Del C42 (globular cluster)
Aqr M2 (globular cluster), C55 (Saturn Neb.),
C63 (Helix Neb.)
Cap M30 (globular cluster)
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Planet Watch Workshop at
Chabot Observatory & Science Center
September 25, 7:30 to 8:30 p.m., "High Resolution Portraits of the Planets," public lecture by Donald Parker.
September 25, 8:30 to 11:30 p.m., Observe Jupiter through Chabot's 20-inch refractor.
The public lecture is limited to 90 participants, and the admission fee is $5 per person.
September 26, 9:00 a.m. to 5:00 p.m., Planet Watch Workshop, with observing from 9:00 p.m. to midnight.
At least one dozen different workshop presentations on observing and photographing the planets. Special emphasis will be given to Jupiter and Mars, the August 11, 1999 total eclipse of the Sun, and the November 15, 1999 transit of Mercury. Workshop participation is limited to the first 40 registrants. The cost is $40 for Chabot Observatory members, $45 for non-members (includes lunch). To register call 510/530-3480 ext. 22.
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