----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
ATMDEN 71
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
COLUMNS FORMAT DESCRIPTION DEFAULT VALUE & UNITS
1-6 A6 ATMDEN - Specifies the static density
model that will be used for atmospheric
density calculations.
9-10 I2 Model selection number. 71
= 71 - Jacchia 1971 Model
= 87 - French Drag Model [1]
= 86 - MSIS Empirical Drag Model [2]
11-12 I2 = 0 or 1 For Mars runs, the Culp-Stewart 1983 1
atmospheric density model is used
= 2 For Mars runs, the Stewart 1987
atmospheric density model is used
= 3 For Mars runs, the Mars Global Reference
atmospheric density model is used
(Marsgram)
= 0 or 1 For Venus runs, the JPL atmospheric
density model is used
= 2 For Venus runs, the Hedin atmospheric
density model is used
15-16 I2 Controls choice of 3 hourly or daily Kp values
and whether the solar flux average is for the end
or midpoint of the 81 day averaging interval for
atmospheric density model 87.
Column 15 Controls whether the 81 day average solar flux
value is calculated with the moving average at
the end point or midpoint of the averaging
interval.
= 0 End point of interval
= 1 Midpoint of interval
JUL 1998
9808.0
GLOBAL SET
ATMDEN (cont)
COLUMNS FORMAT DESCRIPTION DEFAULT VALUE & UNITS
Column 16 Controls whether 3 hourly or daily values of Kp
are used.
= 0 3 hourly Kp values used [NOTE 1]
= 1 Daily Kp values used
25-44 D20.8 Controls the maximum height in Venus runs with JPL
Model and Hedin Model. Range is 1.0km - 1000000.0km
NOTE [1]: Requires that 3 hourly Kp values be available in the BIH
Tables file on UNIT02.
NOTE [2]: Works with both 3-hourly Kp values and 24-hour Kp values.
IF CARD OMITTED: The Jacchia 1971 density model will be used for
atmospheric density calculations.
AUG 1985
8507.0
GLOBAL SET