- Elevation, modelled
- 107 m
- Tallest summit within 25 miles
- Second Watchung Mountain168 m · 24.2 mi
- Nearest byway
- Upper Freehold Historic Farmland Byway20.5 mi off
- Sunset, June solstice
- 20:31local time
- Coordinates
- 40.3907, -74.1848
Holmdel Horn Antenna is a attraction in New Jersey, at a modelled 107 m. Second Watchung Mountain stands 168 m to the northwest, 24 miles off. The nearest named place is Crawford Hill, a peak 0.1 miles away. Upper Freehold Historic Farmland Byway passes 21 miles off. 34 named summits stand within 25 miles.
At this site in 1964, Arno Penzias and Robert Wilson used this horn-shaped radio antenna and detected cosmic microwave background radiation, a significant discovery supporting the Big Bang theory.
microwave horn antenna in New Jersey, US
Wikidata Q5883312, referenced by the OpenStreetMap record.
- Built
- 1959
Summits around it
The highest named summits within 25 miles of Holmdel Horn Antenna. Elevation from each summit’s own record; bearing measured between the two coordinates.
| Summit | Bearing | Elevation | Distance |
|---|---|---|---|
| Second Watchung Mountain | NW 308° | 168 m | 24.2 mi |
| Todt Hill | NNE 14° | 125 m | 14.9 mi |
| Crawford Hill | NW 324° | 120 m | 0.1 mi |
| Pine Hill | SW 228° | 110 m | 16.2 mi |
| Telegraph Hill | ENE 68° | 106 m | 0.7 mi |
| Tenmile Run Mountain | W 277° | 92 m | 21.9 mi |
| Nook Hill | NNW 345° | 92 m | 24.7 mi |
| Rocky Hill | W 268° | 92 m | 25.0 mi |
- 20.5 mi off the Upper Freehold Historic Farmland Byway
- 21.1 mi off the Millstone Valley Scenic BywayNational
Named places within 25 miles
- Vietnam Veterans Memorial: 0.5 mi
- The South Pole: 8.1 mi
- First School Bell Sayreville, NJ: 10.3 mi
- Sayre & Fisher Reading Room: 10.5 mi
- Sayre & Fisher Brick Water Tower: 10.7 mi
- Radio Astronomy: 2.1 mi
- The Jansky Monument: 2.1 mi
- Karl Jansky Radio Astronomy Site: 2.1 mi
- Historic Public School Bell: 2.8 mi
- World War I Memorial: 3.0 mi
- Cliffwood Beach: 4.6 mi
- Seidler's Beach: 4.9 mi
- Belvedero Beach: 5.2 mi
- Seidler Beach: 5.2 mi
- Ideal Beach: 5.4 mi
- Crawford Hill: 0.1 mi
- Telegraph Hill: 0.7 mi
- Beacon Hill: 2.3 mi
- Sugar Loaf Hill: 5.4 mi
- Garrett Hill: 5.7 mi
- North Tower: 10.5 mi
- Twin Lights State Historic Site: 10.5 mi
- Power House: 10.5 mi
- South Tower: 10.5 mi
- Lighthouse Keeper's Quarters: 10.8 mi
- Fallkill Falls: 21.8 mi
- Binnen Falls: 22.0 mi
- Ambergill Falls: 22.0 mi
- Seele: 22.3 mi
- Buttermilk Falls: 23.8 mi
- Barber: 10.4 mi
- Raritan Landing: 16.8 mi
- Feltville Historic District: 22.7 mi
- Grover Cleveland Service Area: 12.2 mi
- Thomas Edison Service Area: 12.4 mi
- Molly Pitcher Service Area: 16.7 mi
| Date | Sunrise | Golden hour | Sunset |
|---|---|---|---|
| March equinox | 07:01 | 18:33 | 19:09 |
| June solstice | 05:28 | 19:50 | 20:31 |
| September equinox | 06:45 | 18:20 | 18:56 |
| December solstice | 07:17 | 15:51 | 16:34 |
Local time (America/New_York).
- OpenStreetMap record
- Wikipedia
- Wikidata
- National Register of Historic Places, reference 89002457
Day trips start here
- Keansburg · 5 mi
- Old Bridge · 6 mi
- Perth Amboy · 9 mi
- Freehold · 10 mi
- Englishtown · 11 mi
- East Brunswick · 12 mi
Take the scenic way to Holmdel Horn Antenna.
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