Solar Mesosphere Explorer

Solar Mesosphere Explorer
Spacecraft properties


Mission type	Earth observation
Operator	NASA
COSPAR ID	1981-100A
SATCAT №	12887
Mission duration	~7 years

Manufacturer	Jet Propulsion Laboratory
Launch mass	437 kilograms (963 lb)

Start of mission
Launch date	October 6, 1981, 11:27 (1981-10-06UTC11:27Z) UTC
Rocket	Delta 2310
Launch site	Vandenberg AFB SLC-2W

Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee	535.0 kilometers (332.4 mi)
Apogee	551.0 kilometers (342.4 mi)
Inclination	97.5589 degrees
Period	95.50 minutes
RAAN	138.8452 degrees
Argument of perigee	259.5734 degrees
Mean anomaly	100.6126 degrees
Mean motion	16.36783794
Epoch	5 March 1991, 04:02:01 UTC
Revolution number	205
Instruments
Ultraviolet ozone spectrometer 1.27 micrometre spectrometer nitrogen dioxide spectrometer four-channel infrared radiometer solar ultraviolet monitor solar proton alarm detector

The Solar Mesosphere Explorer (also known as Explorer 64) was a United States unmanned spacecraft to investigate the processes that create and destroy ozone in Earth's upper atmosphere. The mesosphere is a layer of the atmosphere extending from the top of the stratosphere to an altitude of about 80 kilometers (50 mi). The spacecraft carried five instruments to measure ozone, water vapor and incoming solar radiation.

Launched on October 6, 1981, on a Delta rocket from Vandenberg Air Force Base, in California, the satellite returned data until April 4, 1989. The spacecraft reentered Earth's atmosphere on March 5, 1991.

Managed for NASA by the Jet Propulsion Laboratory, the Solar Mesosphere Explorer was built by Ball Space Systems and operated by the Laboratory for Atmospheric and Space Physics of the University of Colorado where one hundred undergraduate and graduate students were involved.^[1]

Mass: 437 kilograms (963 pounds)
Power: Solar panels which charged NiCad batteries
Configuration: Cylinder 1.25 meter (4.1 ft) diameter by 1.7 meter (5.6 ft) high
Science instruments: Ultraviolet ozone spectrometer, 1.27 micrometre spectrometer, nitrogen dioxide spectrometer, four-channel infrared radiometer, solar ultraviolet monitor, solar proton alarm detector

References

↑ SME: Solar Mesosphere Explorer, University of Colorado at Boulder, http://lasp.colorado.edu/mission_history/missions/past/SME.htm

External links

Explorers program

Explorer	Explorer 1 2 3 4 5 6 (S-2) 7 (S-1a) 8 S-56 9 (S-56A) 10 11 (S-15) 14 (EPE-B) 17 (AE-A) 19 30 (Solrad 8) 32 (AE-B) 33 (IMP-D) 34 35 (IMP-E) 37 (Solrad 9) 39 42 (Uhuru) 44 (Solrad 10) 48 (SAS B) 49 (RAE-B) 52 (Hawkeye 1) 53 (SAS C) 56 (ISEE-1) 57 (IUE) 58 (HCMM) 59 (ICE) 61 (Magsat) 62 (DE-1) 63 (DE-2) 64 (SME) 66 (COBE) 67 (EUVE) 68 (SAMPEX)

MIDEX	50 (IMP-8) 69 (RXTE) 71 (ACE) 77 (FUSE) 78 (IMAGE) 80 (WMAP) 84 (Swift) 85 thru 89 (THEMIS) 92 (WISE) ICON^‡ TESS^‡

SMEX	68 (SAMPEX) 70 (FAST) 73 (TRACE) 74 (SWAS) 75 (WIRE) 81 (RHESSI) 83 (GALEX) 90 (AIM) 91 (IBEX) 93 (NuSTAR) 94 (IRIS)

UNEX	72 (SNOE) 82 (CHIPSat)

MO	79 (HETE-2) CINDI Suzaku TWINS Hitomi GOLD^‡ NICER^‡

International	INTEGRAL

Italics indicates probes that failed to deploy or otherwise malfunctioned · ^‡ indicate missions yet to launch.

← 1980 · Orbital launches in 1981 · 1982 →

Kosmos 1237 \| Molniya-3 No.25 \| Kosmos 1238 \| Kosmos 1239 \| Kosmos 1240 \| Kosmos 1241 \| Musson No.11 \| Progress 12 \| Kosmos 1242 \| Molniya 1-49 \| Kosmos 1243 \| Interkosmos 21 \| Kiku 3 \| Kosmos 1244 \| Kosmos 1245 \| Kosmos 1246 \| Kosmos 1247 \| Hinotori \| Comstar D4 \| OPS 1166 \| Kosmos 1248 \| Kosmos 1249 \| Kosmos 1250 · Kosmos 1251 · Kosmos 1252 · Kosmos 1253 · Kosmos 1254 · Kosmos 1255 · Kosmos 1256 · Kosmos 1257 \| Soyuz T-4 \| Kosmos 1258 \| OPS 7350 \| Kosmos 1259 \| Gran' No.18L \| Kosmos 1260 \| Soyuz 39 \| Molniya-3 No.24 \| Yantar-2K No.979 \| Kosmos 1261 \| Kosmos 1262 \| Kosmos 1263 \| STS-1 \| Kosmos 1264 \| Kosmos 1265 \| Kosmos 1266 \| OPS 7225 \| Kosmos 1267 \| Kosmos 1268 \| Kosmos 1269 \| Soyuz 40 \| Meteor-2 No.8 \| Nova-1 \| Kosmos 1270 \| Kosmos 1271 \| Kosmos 1272 \| Kosmos 1273 \| GOES 5 \| Intelsat V F-1 \| Rohini RS-D1 \| Kosmos 1274 \| Kosmos 1275 \| Molniya-3 No.30 \| Kosmos 1276 \| Kosmos 1277 \| Meteosat 2 · APPLE · CAT-3 \| Kosmos 1278 \| NOAA-7 \| Molniya 1-50 \| Ekran No.21L \| Kosmos 1279 \| Kosmos 1280 \| Kosmos 1281 \| Meteor-Priroda 2-4 · Iskra 1 \| Kosmos 1282 \| Kosmos 1283 \| Kosmos 1284 \| Gran' No.19L \| DE-1 · DE-2 \| Kosmos 1285 \| Kosmos 1286 \| FLTSATCOM 5 \| Kosmos 1287 · Kosmos 1288 · Kosmos 1289 · Kosmos 1290 · Kosmos 1291 · Kosmos 1292 · Kosmos 1293 · Kosmos 1294 \| Bulgaria 1300 \| Himawari 2 \| Kosmos 1295 \| Kosmos 1296 \| Kosmos 1297 \| Kosmos 1298 \| Kosmos 1299 \| Kosmos 1300 \| Kosmos 1301 \| Kosmos 1302 \| OPS 3984 \| Kosmos 1303 \| Kosmos 1304 \| Kosmos 1305 \| Kosmos 1306 \| Kosmos 1307 \| Kosmos 1308 \| Kosmos 1309 \| Shijian 2 · Shijian 2-01 · Shijian 2-02 \| Oreol 3 \| Kosmos 1310 \| SBS-2 \| Kosmos 1311 \| Kosmos 1312 \| Kosmos 1313 \| SME · UoSAT-1 \| Kosmos 1314 \| Gran' No.20L \| Kosmos 1315 \| Kosmos 1316 \| Molniya-3 No.31 \| Venera 13 \| OPS 4029 \| Kosmos 1317 \| Kosmos 1318 \| Venera 14 \| STS-2 \| Kosmos 1319 \| Molniya 1-51 \| Satcom 3R \| Bhaskara 2 \| Kosmos 1320 · Kosmos 1321 · Kosmos 1322 · Kosmos 1323 · Kosmos 1324 · Kosmos 1325 · Kosmos 1326 · Kosmos 1327 \| Kosmos 1328 \| Kosmos 1329 \| Intelsat V F-3 \| RS-3 · RS-4 · RS-5 · RS-6 · RS-7 · RS-8 \| Navstar 7 \| Kosmos 1330 \| MARECS-1 · CAT-4 \| Molniya-1 No.55

Payloads are separated by bullets ( · ), launches by pipes ( \| ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in (brackets).

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