INTERNATIONAL JUPITER WATCH NEWSLETTER

November 2, 1998

As was mentioned at the DPS session, the information provided on these pages is only as useful as the information that is put into them. If you have planned observing schedules and/or any other useful information that you would like to see on these pages, please feel free to submit them to ijw@nmsu.edu.

Additional alert: The Cassini Venus flyby is scheduled for 24 June 1999. Any planned observations may also be posted here.

From: Don Parker (dparker@netside.net)

UNIVERSAL DATES/TIMES FOR JUPITER IMAGES 2 Oct., 1998

D.C. Parker, Coral Gables, FL. Lynxx PC camera 16-in (41cm) Meade SCT
Eyepiece Projection @ f/22.4
Integration Times:
Blue (Schott BG12 + IR Rejection) 2.75s
Green (VG9 + IR Rejection) 1.50s
Red (RG610 + IR Rejection) 1.35s
Images flat and dark corrected.
Seeing good (6-7), Transparency good ( 5.0m); No wind. Slight dew.

I have attached some .jpg images taken this evening showing a bright spot in Saturn's southern equatorial zone. I estimate that the spot's center transited Saturn's CM at 03:22 UT. Thus the longitude of the spot (System I) is 11.1 degrees, (System III) 102.8 degrees. The attached text file describes the filters, scope, integration times, etc.
Best,
Don

SATURN IMAGES 31 Oct., 1998
more

D.C. Parker, Coral Gables, FL. Lynxx PC camera 16-in (41cm) Meade SCT
Eyepiece Projection @ f/22.4
Integration Times:
Blue (Schott BG12 + IR Rejection) 15.00s
Green (VG9 + IR Rejection) 5.75s
Red (RG610 + IR Rejection) 4.00s
Integrated Light + IR Rejection 1.12s
Images flat and dark corrected.
Seeing good (7-9); Transparency good ( 5.0m); Wind E 0-5 kts. No dew.

From: CPAJohnM@aol.com

Oval FA
date(U.T.)SIIobserver
1998Aug18Wc289.4 degreesDonald Parker *
1998Sep14Wc281 degreesRandy Tatum
1998Sept21Wc277.7 degreesZac Pujic
1998Sept30Wc272.1 degreesZac Pujic
1998Oct03Wc270.1 degreesZac Pujic
1998Oct10Wc269 degreesZac Pujic
1998Oct12Wc268 degreesFrank Melillo
1998Oct12Wp267 degreesWalter Haas
1998Oct12Wf275 degreesWalter Haas
1998Oct22Wc262.7 degreesZac Pujic
1998Oct23Wc261.3 degreesZac Pujic
1998Oct27Wc254 degreesJohn W. McAnally

STB Dark Spot #1
date(U.T.)SIIobserver
1998Aug02Dc186 degreesClaus Benninghoven
1998Sept19Dc160 degreesWalter Haas
1998Sep20Dc158 degreesRandy Tatum
1998Sept22Dc159 degreesWalter Haas
1998Sept25Dc155 degreesHarry Pulley
1998Oct02Dc152.7 degreesDonald Parker *
1998Oct04Dc155 degreesWalter Haas
1998Oct05Dc150 degreesHarry Pulley
1998Oct07Dc155 degreesWalter Haas
1998Oct10Dc150.1 degreesZac Pujic
1998Oct19Dc144 degreesZac Pujic
1998Oct24Dc141 degreesZac Pujic

STB Dark Feature #2
date(U.T.)SIIobserver
1998Sep16Dc193 degreesRandy Tatum
1998Sep20Dc189 degreesRandy Tatum
1998Oct02Dc183.6 degreesDonald Parker *
1998Oct04Dc183 degreesWalter Haas
1998Oct05Dc179 degreesHarry Pulley
1998Oct07Dp181 degreesWalter Haas
1998Oct07Df190 degreesWalter Haas
1998Oct12Df189 degreesWalter Haas
1998Oct19Dc173.6 degreesZac Pujic

STB Dark Spot No. 3
date(U.T.)SIIobserver
1998May12Dc163 degreesWalter Haas
1998June24Dc142 degreesWalter Haas
1998Sept29Dc104 degreesDonald Parker *

GRS
date(U.T.)SIIobserver
1998Sept18GRSc65 degreesWalter Haas
1998Sept19GRSc68 degreesWalter Haas
1998Sep20GRSc66 degreesRandy Tatum
1998Sep27GRSc63 degreesRandy Tatum
1998Sep29GRSc65.3 degreesDonald Parker *
1998Oct06GRSc64 degreesWalter Haas
1998Oct13GRSc64 degreesWalter Haas
1998Oct29GRSc66 degreesZac Pujic **

Oval BE
date(U.T.)SIIobserver
1998Oct22Wc227.7 degreesZac Pujic

SEB Disturbance
date(U.T.)SIIobserver
1998Aug18Wf285.4 degreesDonald Parker *
* scaled from image
** average of preceding and following transits

Best regards,
John
/////////////////////////////////////
John W. McAnally
The ALPO Jupiter Section
Acting Assistant Coordinator
Transit Timings

Reminder:

Long(III) = Long (II) + 81.245 + 0.266 (T - T0)
where
T0 = 2438761.5 = Julian day at 0h UT 1 Jan 1965
and
T = Time of observation in Julian days