The following table provides information on unit preferences for
the STK Object Model.
| Type of Unit |
Information |
| DistanceUnit |
Default Unit abbrv = km
Dimension Id = 0
Available Units
Feet (ft)
Statute Miles (mi)
Nautical Miles (nm)
Meters (m)
Kilometers (km)
Astronomical Units (Au)
Earth Radii (Re)
Kilofeet (kft)
Meter Square Roots (sqrtm)
Furlong (fur)
Fathom (fm)
League (leag)
|
| TimeUnit |
Default Unit abbrv = sec
Dimension Id = 1
Available Units
Seconds (sec)
Minutes (min)
Hours (hr)
Days (day)
Centidays (cd)
Earth Canonical Time (EarthTU)
Sun Canonical Time (SunTU)
Fortnight (FN)
Years (yr)
|
| DateFormat |
Default Unit abbrv = UTCG
Dimension Id = 2
Available Units
Epoch Seconds (EpSec)
Epoch Minutes (EpMin)
Epoch Hours (EpHr)
Epoch Days (EpDay)
Epoch Years (EpYr)
Gregorian LCL (LCLG)
Gregorian UTC (UTCG)
Julian LCL (LCLJ)
Julian UTC (UTCJ)
YYDDD.ddd (YYDDD)
Julian4 UTC (UTCJFOUR)
Julian Date (JDate)
YYYYDDD.hhmmss (YYYYDDD)
Jul Date Offset (JDateOff)
Mission Elapsed (MisElap)
YYYYMMDD.ddd (YYYYMMDD)
YYYY/MM/DD Time (YYYY/MM/DD)
ISO-YD
ISO-YMD
GMT System (GMT)
Modified Julian Date (ModJDate)
Julian Ephemeris Date (JED)
Gregorian TDT (TDTG)
Gregorian TAI (TAIG)
Julian TAI (TAIJ)
Gregorian GPS Time (GPSG)
GPS Time (GPS)
DD/MM/YYYY Time (DD/MM/YYYY)
Earth Canonical Time (EarthEpTU)
Sun Canonical Time (SunEpTU)
YYYY:MM:DD:HH:MM:SS.sss Time
(YYYY:MM:DD)
GPS Z Count (GPSZ)
Gregorian TDB (TDBG)
|
| AngleUnit |
Default Unit abbrv = deg
Dimension Id = 3
Available Units
Degrees (deg)
Radians (rad)
Arc Seconds (arcSec)
Arc Minutes (arcMin)
Deg:Min:Sec (DMS)
Hr:Min:Sec (HMS)
Seconds Of Arc (secArc)*
Seconds of Time (secTime)
MilliRadian (mrad)
MicroRadian (urad)
Revolution (revs)
Semicircle (semiC)
MilliDegree (mdeg)
|
| MassUnit |
Default Unit abbrv = kg
Dimension Id = 8
Available Units
Kilograms (kg)
Pounds (lb)
Slugs (slug)
Milligrams (mg)
Grams (g)
|
| PowerUnit |
Default Unit abbrv = dBW
Dimension Id = 9
Available Units
Attowatts (aW)
Femtowatts (fW)
Picowatts (pW)
Nanowatts (nW)
Microwatts (uW)
Milliwatts (mW)
Watts (W)
Kilowatts (KW)
Megawatts (MegW)
Gigawatts (GW)
Terawatts (TW)
dBpW (dBpW)
dBnW (dBnW)
dBuW (dBuW)
dBm (dBm)
dBW (dBW)
|
| FrequencyUnit |
Default Unit abbrv = GHz
Dimension Id = 10
Available Units
Hertz (Hz)
Kilohertz (KHz)
Megahertz (MHz)
Gigahertz (GHz)
Terahertz (THz)
|
| SmallDistanceUnit |
Default Unit abbrv = m
Dimension Id = 18
Available Units
Inches (in)
Centimeters (cm)
Millimeters (mm)
Microns (um)
Nanometers (nanom)
Meters (m)
Feet (ft)
|
| LatitudeUnit |
Default Unit abbrv = deg
Dimension Id = 19
Available Units
Degrees (deg)
Radians (rad)
Deg:Min:Sec (DMS)
Hr:Min:Sec (HMS)
Deg:Min:Sec_Dir (DMS_Lat)
|
| LongitudeUnit |
Default Unit abbrv = deg
Dimension Id = 20
Available Units
Degrees (deg)
Radians (rad)
Deg:Min:Sec (DMS)
Hr:Min:Sec (HMS)
Degree 0 to 360 (degEast)
Degree -180 to 180 (degEastWest)
Deg:Min:Sec_Dir (DMS_Lon)
|
| DurationUnit |
Default Unit abbrv = HMS
Dimension Id = 21
Available Units
Seconds (sec)
Hr:Min:Sec (HMS)
|
| Temperature |
Default Unit abbrv = K
Dimension Id = 22
Available Units
Celsius (degC)
Fahrenheit (degF)
Kelvin (K)
|
| SmallTimeUnit |
Default Unit abbrv = sec
Dimension Id = 23
Available Units
Seconds (sec)
Milliseconds (msec)
Microseconds (usec)
Nanoseconds (nsec)
Picoseconds (psec)
|
| RatioUnit |
Default Unit abbrv = dB
Dimension Id = 24
Available Units
Units (units)
Decibel (dB)
|
| RcsUnit |
Default Unit abbrv = dBsm
Dimension Id = 25
Available Units
Square Meters (sqm)
Decibel (dBsm)
|
| DopplerVelocityUnit |
Default Unit abbrv = m/s
Dimension Id = 26
Available Units
Meters per Second (m/s)
Feet per Second (fps)
Kilometers per Hour (kph)
Nautical Miles per Hour (kts)
Statute Miles per Hour (mph)
|
| SARTimeResProdUnit |
Default Unit abbrv = m-sec
Dimension Id = 27
Available Units
Meter-Second (m-sec)
Meter-Millisecond (m-msec)
|
| ForceUnit |
Default Unit abbrv = N
Dimension Id = 30
Available Units
Newtons (N)
Kilonewtons (kN)
Pounds (lbf)
Millinewtons (mN)
|
| PressureUnit |
Default Unit abbrv = Pa
Dimension Id = 31
Available Units
Pascals (Pa)
Kilopascals (kPa)
Pounds per square inch (Psi)
Millibars (mbar)
|
| SpecificImpulseUnit |
Default Unit abbrv = s
Dimension Id = 32
Available Units
Seconds (s)
|
| PRFUnit |
Default Unit abbrv = KHz
Dimension Id = 44
Available Units
Hertz (Hz)
Kilohertz (KHz)
Megahertz (MHz)
|
| BandwidthUnit |
Default Unit abbrv = MHz
Dimension Id = 45
Available Units
Hertz (Hz)
Kilohertz (KHz)
Megahertz (MHz)
Gigahertz (GHz)
|
| SmallVelocityUnit |
Default Unit abbrv = cm/s
Dimension Id = 49
Available Units
Inches per Second (in/s)
Centimeters per Second (cm/s)
Millimeters per Second (mm/s)
Meters per Second (m/s)
Feet per Second (fps)
|
| Percent |
Default Unit abbrv = %
Dimension Id = 54
Available Units
UnitValue (unitValue)
Percentage (%)
|
| MissionModelerDistanceUnit |
Default Unit abbrv = nm
Dimension Id = 60
Available Units
Feet (ft)
Kilofeet (kft)
Meters (m)
Kilometers (km)
Statute Miles (mi)
Nautical Miles (nm)
|
| MissionModelerTimeUnit |
Default Unit abbrv = hr
Dimension Id = 61
Available Units
Seconds (sec)
Minutes (min)
Hours (hr)
|
| MissionModelerAltitudeUnit |
Default Unit abbrv = ft
Dimension Id = 63
Available Units
Feet (ft)
Kilofeet (kft)
Meters (m)
Kilometers (km)
Statute Miles (mi)
Nautical Miles (nm)
|
| MissionModelerFuelQuantityUnit |
Default Unit abbrv = lb
Dimension Id = 65
Available Units
Pounds (lb)
Kilograms (kg)
|
| MissionModelerRunwayLengthUnit |
Default Unit abbrv = kft
Dimension Id = 67
Available Units
Feet (ft)
Kilofeet (kft)
Meters (m)
Kilometers (km)
Statute Miles (mi)
Nautical Miles (nm)
|
| MissionModelerBearingAngleUnit |
Default Unit abbrv = deg
Dimension Id = 68
Available Units
Radians (rad)
Degrees (deg)
Hr:Min:Sec (HMS)
Deg:Min:Sec (DMS)
|
| MissionModelerAngleOfAttackUnit |
Default Unit abbrv = deg
Dimension Id = 69
Available Units
Radians (rad)
Degrees (deg)
Hr:Min:Sec (HMS)
Deg:Min:Sec (DMS)
|
| MissionModelerAttitudeAngleUnit |
Default Unit abbrv =deg
Dimension Id = 70
Available Units
Radians (rad)
Degrees (deg)
Hr:Min:Sec (HMS)
Deg:Min:Sec (DMS)
|
| MissionModelerGUnit |
Default Unit abbrv = G-SeaLevel
Dimension Id = 72
Available Units
Standard Sea Level G (G-SeaLevel)
|
| SolidAngle |
Default Unit abbrv = Sterad
Dimension Id = 73
Available Units
Steradians (Sterad)
Milli Steradians (mSterad)
Micro Steradians (uSterad)
Nano Steradians (nSterad)
Spheres (Spheres)
Hemispheres (HemiSphere)
Quarterspheres (QuartSphere)
SphericalRightAngle (SphRightAng)
SphericalDegrees (SphDeg)
Square Degrees (SqrDeg)
Square Grades (SqrGrade)
|
| MissionModelerTSFCUnit |
Default Unit abbrv = lbm/hr/lbf
Dimension Id = 77
Available Units
TSFC LbmHrLbf (lbm/hr/lbf)
TSFC LbmSecLbf (lbm/sec/lbf)
TSFC KgHrN (kg/hr/N)
TSFC KgSecN (kg/sec/N)
|
| MissionModelerPSFCUnit |
Default Unit abbrv = lbm/hr/hp
Dimension Id = 78
Available Units
PSFC LbmHrHp (lbm/hr/hp)
PSFC LbmSecHp (lbm/sec/hp)
PSFC KgHrW (kg/hr/W)
PSFC KgSecW (kg/sec/W)
|
| MissionModelerForceUnit |
Default Unit abbrv = lbf
Dimension Id = 79
Available Units
Newtons (N)
Kilonewtons (kN)
Pounds (lbf)
Kilogram Force (kgf)
|
| MissionModelerPowerUnit |
Default Unit abbrv = hp
Dimension Id = 80
Available Units
FlightWatt (Watt)
FlightKilowatt (KWatt)
Horsepower (hp)
|
| SpectralBandwidthUnit |
Default Unit abbrv= Hz
Dimension Id = 93
Available Units
Hertz (Hz)
|
| BitsUnit |
Default Unit abbrv = Mb
Dimension Id = 160
Available Units
BitsPerSecond (b)
KiloBitsPerSecond (kb)
MegaBitsPerSecond (Mb)
GigaBitsPerSecond (Gb)
TeraBitsPerSecond (Tb)
|
| MagneticFieldUnit |
Default Unit abbrv = nT
Dimension Id = 1005
Available Units
Tesla (T)
Gauss (gauss)
nanoTesla (nT)
MilliGauss (mGauss)
|
* Seconds of Arc has been deprecated in STK 9.1 and should be
replaced with Seconds of Time (secTime); Seconds of Arc remains
valid for the purpose of backward compatibility.