Aba: coordinates, UTM zone and magnetic declination
Survey data sheet for Aba (Nigeria) for field work: coordinates, UTM zone, scale factor, grid convergence, today's magnetic declination and geoid undulation, computed for the city center.
Values for the city center (GeoNames coordinate). Declination from the World Magnetic Model 2025 for today's date; geoid from EGM2008. For an exact point, use the tools below.
Nearest GNSS reference stations (IGS)
Tools to use here
FAQ
What UTM zone is Aba in?
Aba is in UTM zone 32N, with central meridian 9° E. In WGS 84, the city center is at E 318,944 m and N 564,675 m.
What is the magnetic declination in Aba?
Today the magnetic declination in Aba is 0.56° W, changing by +5.0′ per year (WMM2025 model). To get the true azimuth, add the declination to the magnetic azimuth (East positive, West negative).
What is the geoid undulation in Aba?
The geoid undulation (EGM2008) in Aba is N = 19.44 m. To convert a GNSS height (ellipsoidal, h) to an approximate orthometric height: H = h − N.
Cities near Aba
- Umuahia 49 km
- Port Harcourt 54 km
- Owerri 56 km
- Uyo 63 km
- Calabar 108 km
- Yenagoa 123 km
- Ogbia 125 km
- Onitsha 133 km
- All cities in Nigeria
© GeoNames (CC BY 4.0) · Unicode CLDR · WMM2025 (NOAA/BGS) · EGM2008 (NGA) · IGS