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Location: 22
(39.7117°N, 89.5929°W)
Time: 15:17:00
(UTC-05:00)
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Vanguard 1 - Orbit

View from above orbital plane
View from above orbital plane
View from above satellite
View from above satellite

Ground track
Ground track

The orbit is defined by the following mean orbital elements,

1 00005U          26108.12683875 +.00000000 +00000-0 +19665-3 0 00005
2 00005  34.2498 139.6608 1836679 227.7068 115.2744 10.85971120    00
Epoch (UTC): 18 April 2026 03:02:38
Eccentricity: 0.1836679
inclination: 34.2498°
perigee height: 654 km
apogee height: 3818 km
right ascension of ascending node: 139.6608°
argument of perigee: 227.7068°
revolutions per day: 10.85971120
mean anomaly at epoch: 115.2744°

The dashed part of the orbit path shows where the satellite is in the earth's shadow,  

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