SEAHAWK-1
NORAD 43820
Payload
LEO
2018-099BQ
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LEO · NORAD 43820
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Altitude (km)
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Speed (km/s)
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Latitude
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Longitude
🛰️ Orbital Parameters
Perigee
488 km
Apogee
499 km
Inclination
97.4°
Period
94.5 min
Mean Motion
15.24122741 rev/day
TLE Epoch
2026-09-17 02:00:00 UTC
📐 Computed Orbital Characteristics
Avg. Altitude494 km
Orbital Velocity27,433 km/h
Velocity7.62 km/s
Orbital Period94 minutes
Orbits / Day15.24
Eccentricity0.0008
Semi-Major Axis6,865 km
Orbit ClassSun-Synchronous (SSO)
Est. Orbital Lifetime~1–3 years
🚀 Launch & Identity
Country / Operator
🇺🇸 University of North Carolina - Wilmington (United States)
Launch Date
2018-12-03
Launch Site
Vandenberg Space Force Base, United States
Int'l Designator
2018-099BQ
Object Type
Payload
RCS Size
Medium (0.1–1 m²)
📖 About This Object
SEAHAWK-1 is an active satellite operated by University of North Carolina - Wilmington (United States), launched on 2018-12-03 from Vandenberg Space Force Base, United States on the SSO-A launch. It orbits in Low Earth Orbit (LEO) at altitudes between 488 km and 499 km with an inclination of 97.4°. It travels at approximately 27,433 km/h (7.62 km/s), completing one full orbit every 94 minutes — that’s roughly 15.24 orbits per day. Its near-polar, sun-synchronous orbit means it passes over any given point on Earth at approximately the same local solar time, ideal for consistent Earth observation lighting conditions. Its near-circular orbit (eccentricity close to zero) means it maintains a very consistent altitude throughout each revolution. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~1–3 years. Orbital Radar tracks SEAHAWK-1 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.
🌍 Orbit Context
SEAHAWK-1 orbits at an average altitude of 494 km in a sun-synchronous orbit (SSO), a specialised subset of LEO where the orbital plane precesses to maintain a constant angle relative to the Sun. This provides consistent lighting conditions on every pass — essential for Earth observation, weather monitoring and environmental science. Within ±50 km of SEAHAWK-1’s average altitude, there are currently 10,262 active payloads and 213 tracked debris or rocket body fragments — notable neighbours include STARLINK-1017, STARLINK-1039, STARLINK-1047. This makes it one of the more crowded altitude bands, containing roughly 54.9% of all active satellites. With an inclination of 97.4°, SEAHAWK-1 passes over latitudes between 97.4°N and 97.4°S, providing near-global coverage including the polar regions. Polar and near-polar orbits are used for reconnaissance, weather monitoring and Earth-observation missions that need to image every part of the planet. United States operates approximately 13,204 active satellites in total, of which 9,645 share a similar altitude band with SEAHAWK-1.
❓ Frequently Asked Questions
SEAHAWK-1 is in a sun-synchronous orbit (SSO), a specialised form of LEO at approximately 494 km altitude. Its 97.4° inclination causes the orbital plane to precess at exactly the rate of the Earth’s revolution around the Sun, so the satellite crosses each latitude at a consistent local solar time. It completes one orbit every 94 minutes, travelling at 27,433 km/h.
SEAHAWK-1 is operated by University of North Carolina - Wilmington (United States). It is catalogued by the U.S. Space Surveillance Network under NORAD ID 43820. You can track SEAHAWK-1 in real time on Orbital Radar’s live tracker or browse all operators in the operator directory.
SEAHAWK-1 was launched on 2018-12-03 from Vandenberg Space Force Base, United States, primarily used for polar and sun-synchronous orbit launches due to its southward ocean trajectory from California. At its current altitude, the estimated remaining orbital lifetime is: ~1–3 years. View the full satellite launch log.
Yes — Orbital Radar tracks SEAHAWK-1 (NORAD ID 43820) using the latest TLE (two-line element set) data from Space-Track and CelesTrak. Open the live tracker to see its current position, altitude, speed and orbital path updated in real time. You can also browse the satellite directory to find other tracked objects.
SEAHAWK-1 travels at approximately 27,433 km/h (17,046 mph) — roughly 7.62 km/s. It completes 15.24 orbits per day, meaning the crew or instruments aboard (if any) would experience approximately 30 sunrises and sunsets every 24 hours.