|
Size: 1266
Comment:
|
← Revision 3 as of 2018-08-18 21:41:53 ⇥
Size: 1872
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 6: | Line 6: |
| The chapter on the ESA [[ https://en.wikipedia.org/wiki/Rosetta_(spacecraft) | Rosetta ]] spaceraft toJupiter-family comet [[ https://en.wikipedia.org/wiki/67P/Churyumov%E2%80%93Gerasimenko | 67P/Churyumov–Gerasimenko ]] is interesting. Black surface temperature 205 to 230 Kelvin, MIRO microwave imager measured 30 to 160 Kelvin subsurface ice temperatures. Comet heterogeneous, materials from different parts of the solar nebula. | Chapter 8 about the ESA [[ https://en.wikipedia.org/wiki/Rosetta_(spacecraft) | Rosetta ]] spaceraft toJupiter-family comet [[ https://en.wikipedia.org/wiki/67P/Churyumov%E2%80%93Gerasimenko | 67P/Churyumov–Gerasimenko ]] is interesting. Black surface temperature 205 to 230 Kelvin, MIRO microwave imager measured 30 to 160 Kelvin subsurface ice temperatures. Comet heterogeneous, materials from different parts of the solar nebula. |
| Line 8: | Line 8: |
| Meter scale [[ https://en.wikipedia.org/wiki/Philae_(spacecraft)#Mission | Philae]] lander bounced off intended landing spot at "Agilkia" site, came down in unknown location designated "Abydos". The bounces mistimed experiments; still, useful results from the Cometary Sampling and Composition (COSAC) and 5 kg mass spectrometer (Ptolemy) instruments. COSAC sampled the surface, Ptolemy sampled gases 1 meter above, interesting differences. | Meter scale [[ https://en.wikipedia.org/wiki/Philae_(spacecraft)#Mission | Philae]] lander bounced off intended landing spot at "Agilkia" site, came down in unknown location designated "Abydos". The bounces mistimed experiments; still, useful results from the Cometary Sampling and Composition (COSAC) and 5 kg mass spectrometer (Ptolemy) instruments. planneCOSAC sampled the surface, Ptolemy sampled gases 1 meter above, interesting differences. |
| Line 10: | Line 10: |
| .p189 comet sheds about a meter every perhelion. | Comet sheds about a meter every perhelion. Instruments GIADA and COSIMA measured "compact" and "fluffy" dust particles, the compact particles reprocessed by inner solar system and the fluffy particles predating the solar system. |
| Line 12: | Line 12: |
| 67P/C-G From Wikipedia: | September 2016, Rosetta controlled descent to surface as comet leaves inner solar system. === Instruments === . COSIMA ( Cometary Secondary Ion Mass Analyser ) . GIADA ( Grain Impact Analyzer and Dust Accumulator ) . ROSINA ( Rosetta Orbiter Spectrometer for Ion and Neutral Analysis ) . ices clathrates, not amorphous formed in outer solar system, high D/H ratio indicates outer solar system. === 67P/C-G From Wikipedia === |
Catching Stardust
Natalie Starkey, 2018 532.2 Starkey CedarMill
Mostly popsci.
Chapter 8 about the ESA Rosetta spaceraft toJupiter-family comet 67P/Churyumov–Gerasimenko is interesting. Black surface temperature 205 to 230 Kelvin, MIRO microwave imager measured 30 to 160 Kelvin subsurface ice temperatures. Comet heterogeneous, materials from different parts of the solar nebula.
Meter scale Philae lander bounced off intended landing spot at "Agilkia" site, came down in unknown location designated "Abydos". The bounces mistimed experiments; still, useful results from the Cometary Sampling and Composition (COSAC) and 5 kg mass spectrometer (Ptolemy) instruments. planneCOSAC sampled the surface, Ptolemy sampled gases 1 meter above, interesting differences.
Comet sheds about a meter every perhelion. Instruments GIADA and COSIMA measured "compact" and "fluffy" dust particles, the compact particles reprocessed by inner solar system and the fluffy particles predating the solar system.
September 2016, Rosetta controlled descent to surface as comet leaves inner solar system.
Instruments
- COSIMA ( Cometary Secondary Ion Mass Analyser )
- GIADA ( Grain Impact Analyzer and Dust Accumulator )
- ROSINA ( Rosetta Orbiter Spectrometer for Ion and Neutral Analysis )
- ices clathrates, not amorphous formed in outer solar system, high D/H ratio indicates outer solar system.
67P/C-G From Wikipedia
- Period 6.44 y
- Perhelion 1.24 AU
- 18.7 km³
- 9.982e12 kg
- escape velocity 1 m/s
- two lobes (4.1 km × 3.3 km × 1.8 km, 2.6 km × 2.3 km × 1.8
- 12.4 hour rotation period