CASSINI XDTWT SEGMENT Re 171/172 Hadff Package 2012...

CASSINI XDTWT SEGMENT

Rev 171/172 Handoff Package

2012-248T18:03:00 – 2012-266T16:32:00

15 February 2012

Kelly L. Perry

SMT Report 2

Attitude Strategy 3

Science Highlights 4 - 6

Notes & Liens 7

2 K.L. Perry 15 Feb 12

XD 171/172 SMT report

DATA VOLUME SUMMARY --- TRANSFER FRAME OVERHEAD INCLUDED (80 BITS PER 8800-BIT FRAME)!-----------------------------------------------------------------------------------------------------------------------------------------------------|! | OBSERVATION_PERIOD | DOWNLINK_PASS |! | | |! |---------------------------------------------|----------------------------------------------------|! | P4 | P5 | RECORDED | PLAYBACK |! | | | | |! |-------------------------------------|-------|------------|---------------------------------------|! Start End | START SCI HK+E TOTAL CPACTY MRGN | OPNAV | SCI ENGR | TOTAL CPACTY MARGN NET_MARGN CAROVR|! DOWNLINK PASS NAME doy hh:mm doy hh:mm| (Mb) (Mb) (Mb) (Mb) (Mb) (Mb) | (Mb) | (Mb) (Mb) | (Mb) (Mb) (Mb) (Mb) (%) (Mb) |!-----------------------------------------------------------------------------------------------------------------------------------------------------|! SP_171EA_C34BWGNON249_PRIME 249 22:48 250 00:48 0 1706 121 1828 3322 1494 0 43 12 1883 123 -1760 562 8% 1760 |! SP_171EA_C34BWG2ND249_PRIME 250 01:48 250 07:48 1760 27 4 1791 3322 1531 0 162 35 1988 441 -1547 562 7% 1547 |! SP_171EA_C34HEFNON250_PRIME 250 22:33 251 07:33 1547 229 62 1838 3322 1484 0 232 53 2124 681 -1443 562 7% 1442 |! SP_171EA_C70METNON251_PRIME 251 22:33 252 07:33 1442 760 63 2266 3322 1056 0 257 53 2575 3138 562 562 7% 0 |! SP_171EA_C34HEFNON252_PRIME 252 22:33 253 07:33 0 800 63 864 3322 2458 0 232 53 1149 677 -472 0 0% 472 |! SP_171EA_C34HEFNON253_PRIME 253 22:18 254 07:18 472 734 62 1268 3322 2054 0 232 53 1553 677 -877 0 0% 876 |! SP_171EA_G34HEFNON254_PRIME 254 16:17 255 01:17 876 207 38 1121 3322 2201 0 232 53 1406 645 -761 0 0% 761 |! SP_171EA_G34HEFNON255_PRIME 255 16:02 256 01:02 761 300 62 1123 3322 2199 0 232 53 1408 646 -763 989 14% 762 |! SP_171EA_G34HEFNON256_PRIME 256 16:02 257 01:02 762 304 63 1130 3322 2193 0 232 53 1415 642 -774 989 15% 773 |! SP_171EA_G34BWGNON257_PRIME 257 16:02 258 01:02 773 304 63 1140 3322 2182 0 241 53 1434 509 -926 989 15% 926 |! SP_172EA_G34HEFNON258_PRIME 258 16:02 259 01:02 926 261 63 1250 3322 2072 0 232 53 1535 642 -894 989 15% 894 |! SP_172EA_G34HEFNON259_PRIME 259 15:47 260 00:47 894 272 62 1228 3322 2094 0 232 53 1514 637 -877 1097 13% 876 |! SP_172EA_G34HEFNON260_PRIME 260 15:47 261 00:47 876 233 63 1173 3322 2149 0 232 53 1458 642 -817 1097 14% 816 |! SP_172EA_G34HEFNON261_PRIME 261 15:47 262 00:47 816 555 63 1435 3322 1887 0 232 53 1720 648 -1073 1097 15% 1072 |! SP_172EA_M70METNON262_PRIME 262 08:17 262 17:17 1072 117 32 1221 3322 2101 0 232 53 1506 2495 988 1097 17% 0 |! SP_172EA_M34HEFNON263_PRIME 263 08:02 263 17:02 0 692 62 754 3322 2568 0 232 53 1039 569 -471 109 3% 470 |! SP_172EA_M34HEFNON264_PRIME 264 08:02 264 17:02 470 788 63 1322 3322 2000 0 232 53 1607 569 -1038 109 3% 1038 |! SP_172EA_M34HEFNON265_PRIME 265 08:02 265 17:02 1038 816 63 1917 3322 1405 0 232 53 2203 559 -1644 109 4% 1644 |! SP_172EA_M70METNON266_PRIME 266 08:02 266 16:32 1644 331 63 2039 3322 1283 0 219 50 2307 2416 108 109 4% 0 |!-----------------------------------------------------------------------------------------------------------------------------------------------------|!


XD 171/172 SPASS


XD 171/172 Science Highlights

Sept 4 (doy 248): Cassini begins an 18 day period of interdisciplinary science during the

apoapsis period between revs 171 and 172. UVIS performs a 4h calibration using the

star, Spica. ISS, CIRS and VIMS then perform another observation in the Titan monitoring

campaign (phase 42.2 and range 2 Mkm).

Sept 5 (doy 249): The Cassini Plasma Spectrometer Subsystem (CAPS) orients the

spacecraft for 11h in order to observe the descending ring plane crossing at 20 Rs. CAPS

then performs a 4h calibration of its ion beam spectrometer and its ion mass

spectrometer.

Sept 6 (doy 250): The Cassini spacecraft remains earth-pointed in order to rest the reaction

wheels.

Sept 7 (doy 251): ISS, CIRS and VIMS perform another observation in the Titan monitoring

campaign (phase 74.5 and range 2.3 Mkm). ISS and UVIS then observe the irregular

moon, Bestia, for 10.5h.

Sept 8 (doy 252): ISS performs another observation in their Satellite Orbit Campaign. ISS

and UVIS then observe the irregular moon, Bestia, for 11h.

Sept 9 (doy 253): ISS observes the irregular moon, Bestia, for 13h.


campaign (phase 91.5 and range 1.7 Mkm). CDA performs a 6h interstellar dust

observation.




campaign (phase 90 and range 1.6 Mkm). CDA performs an 11.5h interstellar dust

observation.


campaign (phase 83.2 and range 1.5 Mkm). CDA performs a 12h interstellar dust

observation.

Sept 13 (doy 257): ISS, CIRS and VIMS perform another observation in the Titan monitoring campaign (phase 73.6 and range 1.6 Mkm). CDA performs a 12h interstellar dust

observation.

Sept 14 (doy 258): CDA performs a 13h interstellar dust observation.

Sept 15 (doy 259): The Magnetometer performs an 8h calibration while rolling about the X-

axis of the spacecraft.

Sept 16 (doy 260): CDA performs a 13.5h interstellar dust observation.

Sept 17 (doy 261): ISS performs another observation in their Satellite Orbit Campaign.

VIMS and CIRS observe the dark side of the rings for 11h.

Sept 18 (doy 262): CDA performs a 6h interstellar dust observation. ISS performs another

observation in their Satellite Orbit Campaign. ISS begins an 11h movie of the lit face of

the rings at high phase in order to observe spokes.



Sept 19 (doy 263): ISS completes the 11h movie of the lit face of the rings at high phase in

order to observe spokes. After a 9h downlink using a 34m antenna at the Madrid

complex, ISS begins a 10.5h spoke movie.

Sept 20 (doy 264): ISS completes the 10.5h spoke movie. ISS, CIRS and VIMS perform

another observation in the Titan monitoring campaign (phase 89.6 and range 2.8 Mkm).

Sept 21 (doy 265): ISS, CIRS and VIMS observe the F-Ring for 13h.

Sept 22 (doy 266): CIRS observes Saturn for 13.5h in order to measure oxygen compounds

(H2O, CO2) in the stratosphere.


XD 171/172 Notes

•  Pointing:

•  All waypoints have been checked and have no problems at time of hand-off.

•  Guidelines for the “2 of 3 Rule” pointing are available in the right most column of the XD171/172 Master TOL that is

available on the XD web site.

•  UVIS_171IC_ALPVIR001_PRIME (248T18:40 – 22:30) is a Jettison Activity and should be deleted if RBOT

problems occur.

•  Data Volume: None

•  Telem Modes: None

•  DSN:

•  RSS is performing a Boresight Cal on doy 250.

•  The gap in playback occurs from 250T00:48 – 01:48.

•  Resource checker:

•  The following gaps are expected:

•  250T07:48 – 250T21:03 (dur = 13:15)

•  259T09:02 – 259T14:17 (dur = 05:15)

•  Opmodes:

•  Switches for RSS, MAG-SCAS and ENGR are included in this segment.

•  Hydrazine:None

Special Activities:

•  The UVIS Spica Cal at 248T18:40 – 22:30 is a Jettison Activity. •  MAG-SCAS at 258T01:12 – 06:02

Sequence Liens

•  None

CASSINI XDTWT SEGMENT Re 171/172 Hadff Package 2012...

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