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Information about MPC station 689 (U.S. Naval Observatory, Flagstaff).

Core informations from the MPC code files:

Code 689
Longitude 248.2601 (248:15:36 East)
cos(Latitude) 0.81851
sin(Latitude) +0.57319
Geocentric Latitude 35.00296 (35:00:10)
Geographic Latitude 35.18400 (35:11:02)
Altitude 2301 m (Note: The uncertainty maybe several meters at moment due to wrong values by the observer).
Radius 6371,14 km
Station Name U.S. Naval Observatory, Flagstaff
First observation 1957-05-01
Last observation 2014-05-19 (based on MPCAT)
Interval betwen first and last observation 20838
Number of observations 356118
Number of different observed objects 5500
Number of used nights 5362
MPEC objects https://mpec.jostjahn.de/689-stat.html
MPEC watch https://sbnmpc.astro.umd.edu/mpecwatch/byStation/station_689.html
Small Body Explorer https://sbx.dirac.dev/station/689
NEODyS-2 https://newton.spacedys.com/neodys/index.php?pc=2.1.2&o=689&ab=0
Google Search https://google.com/search?q=689+"U.S. Naval Observatory - Flagstaff"
Location Geohack OpenStreet Map Satellite chart

This research has made use of data and/or services provided by the International Astronomical Union's Minor Planet Center.

Made with obs-stat at 06-04-2026 07:58:54. (C) Jost Jahn, Amrum, Germany, codes@jostjahn.de.