Big Tom
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Big Tom is a hill located in Australia, catalogued in the GeoNames topographic database dataset. The point has been assigned the stable identifier #70804 on SurveyingPedia and sits at an approximate elevation of 208.0 metres. Its coordinates in WGS84 are -42.600000°, 147.230000°, corresponding to 42° 36′ 0.00″ S, 147° 13′ 48.00″ E in the traditional degrees-minutes-seconds format. This page is a self-updating reference — all data is aggregated from public open sources and cross-checked periodically against the originating agency.
Professional surveyors, engineers, and topographers use points like Big Tom to anchor total-station traverses, verify GNSS/RTK solutions, calibrate levelling instruments, and validate survey deliverables against known coordinates. The record on this page is refreshed daily via automated pipelines that monitor the public sources for any updates, corrections, or status changes.
Coordinate formats
| WGS84 (decimal) | -42.600000, 147.230000 |
| WGS84 (DMS) | 42° 36′ 0.00″ S, 147° 13′ 48.00″ E |
| UTM zone (approx.) | Zone 55S (approx.) |
| Elevation | 208.00 m |
| Precise conversion | Open in coordinate converter → |
Geodetic context in Australia
The national geodetic reference in Australia is maintained by Geoscience Australia. The active datum is GDA2020. Coordinates shown on this page are expressed in WGS84 (ETRF/ITRF-compatible) which is directly usable in most modern GNSS receivers. For cadastral work in Australia you may need to convert to the local datum using the Coordinate Hub.
Browse the full list of indexed control points in Australia from the country page.
Nearby benchmarks
The closest 6 indexed control points within roughly 50 km of this location:
Frequently asked questions
What is Big Tom?
Big Tom is a hill located in Australia, catalogued in the GeoNames topographic database network. It has the public identifier #70804 and sits at an elevation of 208.0 metres. The point is used for geodetic reference, topographic surveys, and related measurement workflows.
Where are the exact coordinates of Big Tom?
The position of Big Tom in WGS84 is -42.600000°, 147.230000° (decimal), or 42° 36′ 0.00″ S, 147° 13′ 48.00″ E in degrees-minutes-seconds. For planar surveys in Australia this falls approximately in UTM Zone 55S (approx.).
How can I reach and visit this hill?
Use the satellite imagery above to see the surrounding area. You can open this location directly in Google Maps, Google Earth, Bing Maps, or OpenStreetMap using the buttons provided. Many geodetic points are accessible to the public; some are on protected or private land — check local regulations before any field visit. Always bring documentation or your credentials if you plan to use the marker for professional measurement.
Is this point verified and usable for professional surveying?
This record has been community-verified 0 times. Data quality depends on the source: NGS and official national agency points are typically centimetre-accurate, OpenStreetMap survey points are metre-accurate, and GeoNames topographic landmarks (peaks, hills) are reference-grade only. Always cross-reference with the original agency datasheet before using this point for cadastral, legal, or safety-critical work.