NSSDCA ID: XXNO-00365
Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)
Time span: 1978-12-05 to 1981-11-19
These experimenter-supplied, ionopause and bowshock crossing times and locations data are on ASCII magnetic tape created on a DEC 11/70 computer. They were submitted by L. H. Brace, the principal investigator on the Electron Temperature (Langmuir) Probe experiment. From analysis of his Langmuir Probe data, these crossings were identified in the spacecraft ephemeris data. There are two files of logical records of 120 characters in length grouped together in blocks of 1200 bytes. The crossings are identified from 1978 day 329 through 1981 day 323. The first file contains the ionopause inbound and outbound crossings data which include orbit number, date (year and day of year), time (hours, minutes, and seconds), latitude (above and below equator of Venus), altitude (kilometers above average surface of Venus of 6051 km radius), local solar time (LST) in hours and tenths, measured from anti-solar direction to point of measurement in the equatorial plane of Venus), and solar zenith angle (SZA) measured from the sun to the point of measurement. The second file contains the bowshock inbound and outbound crossings data in the same format. The data for both are for orbits through 1080. This data set is also available in microfilm (78-051A-00G).
Questions and comments about this data collection can be directed to: Dr. David R. Williams
Name | Role | Original Affiliation | |
---|---|---|---|
Mr. Larry H. Brace | General Contact | NASA Goddard Space Flight Center |