1999 Leonid Meteor Storm Timeline
(All times are in
GMT)
Instrument Power OFF
(99-321 Wednesday November 17)
Establish Most
Current Peak time: 99/322-02:53z (as of 11/15/99)
1. Start MPWROFF procedure (duration 2 minutes) 99/321-19:54z event Peak - 7 Hours in Sunlight
Turn Receiver OFF (eclipse starts @ 20:08z)
Spin Down TMI
Open TMI Relay
Close TMI Survival Heater Relay
2. Start PROFF procedure (duration 1 minute 40
seconds) 99/321-19:54z
event 1st Event
Place PR in Health Check Mode
Turn FCIF OFF
Turn RF Power Supply OFF
Turn SCDP Powered OFF
Modify ULIMOFF
Procedure for new Instrument Configuration.
Notify PACORII that
TMI and PR are now OFF until further notice.
---------------------------------------------------------------------------------------------------------------------
31. Start LPWROFF procedure (duration 30
seconds) 99/321-21:23z
event 2nd Event in Sunlight
Open LIS Relay (eclipse starts @ 21:40z)Powers
off LIS
42. Start VRADCDRCL procedure (duration 2
minutes) 99/321-21:23z event 2nd Event started at 15:48:58
Selected Primary Door Drive
at 15:49:38
Closed Rad Cooler Door
at 15:50:17
VRADCDRCL procedure
completed at 15:50:51 Duration 01
minutes 53 seconds
53. Start VPWROFF procedure (duration 1 minute) 99/321-21:23z
event 2nd Event
started at 15:51:27
Power off ScanVSCNDRAPWR
= OFF at 15:51:59
Open VIRS Relay
Modify ULIMOFF
Procedure for new Instrument Configuration.
Notify PACOR II
that LIS and VIRS are now OFF until further notice.
VAPWR
= OFF at 15:52:15
VPWROFF procedure completed at 15:52:21 Duration 00 minutes 54 seconds
4. Start
MPWROFF procedure
(duration 2 minutes)
Turn Receiver OFF
Spin Down TMI
Open TMI Relay
Close TMI Survival Heater Relay
started at 15:53:08
MRVCMDST
= OFF at 15:53:55
MSPNUPCMDST = OFF at 15:54:12
MAPWR = OFF at 15:54:31
Survival Heaters ON at 15:54:55
MPWROFF procedure completed at 15:55:07 Duration 01 minutes 59 seconds
5. Start
PROFF procedure
(duration 1 minute 40 seconds) started at 15:58:33
Place
PR
in Health Check Modeat
15:58:48
Turn FCIF Powered
OFF at 15:59:03
Turn
RF
Power Supply OFF at 15:59:17
Turn
SCDP
Powered OFFMonitor Non-Essential Bus Current, Battery Voltage,
Battery 2 Cell 1 Voltages.
Note: Solar Beta
Angle for 99-321 to 99-322 is -31° to -39°. at 15:59:35
PROFF procedure completed at
16:00:12 Duration
01 minutes 39 seconds
Leonid Meteor Storm
Timeline
Instrument Power
ONDay 98-322 (Instrument Power On)
1. Start PRSTARTON procedure (duration 254 minutes) 99/322-08:54z
event MD
Signature Required
Open PR K1 Survival
Heater Relay (Approx Peak + 6
hours) (will be close 48 hours after Power ON)
started at 00:26:40
Turn SCDP Powered ON (06:35z & 08:12z eventsN
at 00:28:08
Turn FCIF Powered
ON available for PTX & at 00:30:03
Turn RF Power
Supply ON PRX if early permission at 00:30:18
Turn Place PR
in StandbyTANDBY Mode
is granted) at 00:30:52
Start PTXCODE103 (duration 9
minutes)
Do
Not Touch Console procedure started
at 00:31:32
PTXCODE103 procedure ended at 00:40:29 Duration 08 minutes 57 seconds
Start PRXCODE103 procedure (duration 7
minutes)
Do
Not Touch Console started at 00:41:27
PRXCODE103 procedure ended at
00:48:26 Duration 06 minutes 59
seconds
Place PR in ObservationBSERVATION
Modeat
00:49:17
PRSTARTON procedure completed at 00:49:18 Duration 23 minutes 38 seconds
2. ChangeSelect PR Attenuunation to 9DB 99/322-08:54z
event 1st Event
Notify PACORII of PR On Time
---------------------------------------------------------------------------------------------------------------------
3. Start MPWRON procedure (2 minutes 15 seconds) 99/322-10:31z event 2nd Event
Power TMI Survival Heaters OFF
Close TMI Relay
4. Start MSPINUP procedure (duration 3 minutes) 99/322-10:31z event 2nd Event
Spin Up TMI
5. Start MRCVRSON procedure (duration 20
seconds) 99/322-10:31z event 2nd Event
Turn Receiver ON
XATTN
SEL9DB command sent at 00:49:57
63. Start LPWRON procedure (duration 2 minutes) 99/322-10:31z event 2nd Eventstarted at 00:51:42
Close LIS relay LAPWR = ON at
00:52:12
Adjust LIS Thresholds LTHADJ sent
at 00:53:31
LPWRON procedure completed at 00:53:42 Duration 02 minutes 00 seconds
74. Start LBKGNDMDON procedure (duration 30
seconds) 99/322-10:31z event 2nd Event started at 00:54:05
Place LIS Background to 8 kbps
Turn Off LIS Heater Autoselect
Notify PACOR II of TMI and LIS On
Times
--------------------------------------------------------------------------------------------------------------------- LBKGSNDON BG8KBPS
sent at 00:54:23
LBKGNDMDON procedure completed at 00:54:33 Duration 00 minutes 28 seconds
85.
Start VPWRON procedure (duration 2
minutes) 99/322-10:31z event 2nd or 3rd Event started at 01:33:33
Open VIRS relay 99/322-12:09z event relay VAPWRON sent at
01:34:03
Uplink VIRS Time Patch 1 VTIMEPATCH1 sent at
01:34:27
Uplink VIRS Time Patch 2 VTIMEPATCH2 sent at 01:34:47
Turn VIRS Scan Drive On VSCNDRV ON sent at 01:35:22
VPWRON procedure completed at 01:35:29 Duration 01 minute 56 seconds
6. VSCNDRV OFF command sent at 01:36:12
967. Start VOPSHTRS procedure (duration 40
seconds) 99/322-10:31z event 2nd or 3rd Eventstarted at 01:36:54
Select Proper Heater 99/322-12:09z event Heater V8WOHTR ON sent at
01:37:16
10. No VIRS Outgassing is planned this
year
--------------------------------------------------------------------------------------------------------------------- VOPSHTRS procedure completed at 01:37:34 Duration 00 minutes 40 seconds
8. VNORMOUTGAS procedure started at 01:38:12
VRADCDOOR DRIVEA sent at 01:38:58
VRADCDOOR OUTGAS sent at 01:38:58
VINSTGHTR OFF sent at 01:39:32
VOUTSTGHTR OFF sent at 01:39:53
VOUTGAS ENABLE sent at 01:40:09
VMTRNHTRA ON sent at 01:40:27
VNORMOUTGAS procedure completed at 01:40:27 Duration 02 minutes 15 seconds
79. Start MPWRON
procedure (duration
2 minutes 15 seconds)started
at 01:42:20
Power
TMI Survival
Heaters OFF at 01:43:11
Close
TMI Relay MAPWR = ON
at 01:43:35
MPWRON procedure completed at 01:44:32 Duration 02 minutes 12 seconds
810. Start MSPINUP
procedure (duration 3 minutes)started
at 01:44:56
Spin
Up TMI MSPNUPCMDST
= ON at 01:47:41
MSPINUP procedure completed at 01:47:44 Duration 02 minutes 48 seconds
911. Start MRCVRSON
procedure (duration 20 seconds)started
at 01:48:29
Turn
Receiver ON
11. Close PR K1 Survival Heater Relay 99/324-13:00z
event 48 hrs
after Open
Reset Bus Retry
Counters and Modify ULIMOFF procedure for new Instrument
Configuration.
Note: Approval time for
instrument turn-on could vary;
therefore several thirty-minute events should be scheduled (critical) in advance to provide maximum
flexibility for PR turn-on. MRVCMDST = ON at 01:48:42
MRCVRSON procedure completed at 01:48:45 Duration 00 minutes 16 seconds
12. VINFOFLGRST sent at 03:05:11
VSERVOMODE LOW sent at 03:06:32
VLWIRGAIN ATTENUATE sent at 03:07:08
VINFOFLGRST sent at 03:09:01
VOUTSTGHTR ON sent at 04:54:47
VINSTGHTR ON sent at 09:56:36
13. PR internal calibration (ATS load) at 13:03
14. PRSURVHTRS procedure started at 16:16:37
Disabled K1 survival heater at 16:17:31
PRSURVHTRS procedure completed at 16:17:43 Duration 01 minutes 06 seconds
15. VINITOUTGAS_END procedure started at 18:01:13
VINSTGHTR OFF sent at 18:01:29
VOUTSTGHTR OFF sent at 18:01:34
VINITOUTGAS_END procedure completed at
18:01:41 Duration 00 minutes 28 seconds
VRADCDROP procedure started at 18:02:02
VRADCDOOR OPEN send at 18:02:39
VRADCDROP procedure completed at 18:03:12 Duration 01 minutes 10 seconds
VOUTGAS_HTRS procedure started at 22:36:54
VMTRNHTRA OFF sent at 22:37:21
VOUTGAS DISABLE sent at 22:37:21
VOUTGAS_HTRS procedure completed at 22:37:22 Duration 00 minutes 28 seconds
VMSISSMD procedure started at 22:38:02
VSCNDRV ON sent at 22:38:39
VMSISSMD procedure completed at 22:38:47 Duration 00 minutes 45 seconds
VOPSHTRS procedure started at 22:39:18
V8WOHTR OFF sent at 22:40:09
V15WOHTR ON sent at 22:40:36
VOPSHTRS procedure completed at 22:40:36 Duration 01 minutes 18 seconds
Day 98-323
1. PRSURVHTRS procedure started at 23:06:11
Enabled K1 survival heater at 23:07:03
PRSURVHTRS procedure completed at 23:07:16 Duration 01 minutes 05 seconds
Real-time Event
Times During Leonid Storm Peak
Start Time Stop Time
321/15:46:00 16:06:00
321/17:23:00 17:43:00
321/18:59:00 19:19:00
321/19:37:00 19:57:00
321/20:30:00 20:50:00
321/21:25:00 21:45:00
321/22:07:00 22:47:00
321/23:52:00 00:12:00
322/00:24:00 01:03:00
322/01:31:00 01:51:00
322/03:04:00 03:24:00
322/04:45:00 05:05:00