Observatory Naef Épendes
| Alternative names | Observatory of Épendes |
|---|---|
| Named after | Robert Adolf Naef |
| Observatory code | A13 |
| Location | Épendes, Canton of Fribourg, Switzerland |
| Coordinates | 46°45′44.65″N 7°08′21.84″E / 46.7624028°N 7.1394000°E |
| Altitude | 680 m (2,230 ft) |
| Established | 1984 |
| Website | observatoire-ependes |
| Related media on Commons | |
Observatory Robert A. Naef (French: Observatoire Robert A. Naef) is an astronomical observatory located at Épendes, Canton of Fribourg, Switzerland at 7.13938 degrees east of Greenwich and 46.76236 degrees north latitude. Its parallax constants are : ρ sin φ' = 0.68632 (Earth radii from the rotation axis) and ρ cos φ' = +0.72501 (Earth radii from the equatorial plane).
The observatory was inaugurated on 10 May 1984 and was named in memory of Robert Adolf Naef (1907–1975). The minor planet 1906 Naef was named in his honour.