FREGAT R/B
NORAD 100142
Rocket Body
LEO
2026-165S
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LEO · NORAD 100142
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Altitude (km)
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Latitude
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Longitude
🛰️ Orbital Parameters
Perigee
237 km
Apogee
259 km
Inclination
82.3°
Period
89.5 min
Mean Motion
16.10581475 rev/day
TLE Epoch
2026-09-15 13:00:00 UTC
📐 Computed Orbital Characteristics
Avg. Altitude248 km
Orbital Velocity27,937 km/h
Velocity7.76 km/s
Orbital Period89 minutes
Orbits / Day16.11
Eccentricity0.0017
Semi-Major Axis6,619 km
Est. Orbital LifetimeWeeks to months
🚀 Launch & Identity
Country / Operator
🇷🇺 Russia (CIS)
Launch Date
2026-07-19
Launch Site
Plesetsk Cosmodrome, Russia
Int'l Designator
2026-165S
Object Type
Rocket Body
RCS Size
Large (>1 m²)
📖 About This Object
FREGAT R/B is a spent rocket body associated with Russia (CIS), launched on 2026-07-19 from Plesetsk Cosmodrome, Russia on the Rassvet-3 G2 launch. As a relatively recent addition to the catalogue, its orbital elements are well-characterised. It orbits in Low Earth Orbit (LEO) at altitudes between 237 km and 259 km with an inclination of 82.3°. It travels at approximately 27,937 km/h (7.76 km/s), completing one full orbit every 89 minutes — that’s roughly 16.11 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is weeks to months. Spent rocket bodies like FREGAT R/B are among the largest pieces of uncontrolled space debris and are priority targets for collision avoidance manoeuvres and future active debris removal efforts.
🌍 Orbit Context
FREGAT R/B orbits at an average altitude of 248 km in the lower reaches of Low Earth Orbit, where atmospheric drag is significant and orbital lifetimes are measured in months to a few years. This is the busiest corridor in space — home to crewed spacecraft, rapid-revisit imaging satellites and the densest part of the Starlink constellation. Within ±50 km of FREGAT R/B’s average altitude, there are currently 77 active payloads and 7 tracked debris or rocket body fragments — notable neighbours include STARLINK-1067, STARLINK-1068, STARLINK-1171. This is a relatively sparse altitude band, containing less than 1% of all active satellites. With an inclination of 82.3°, FREGAT R/B passes over latitudes between 82.3°N and 82.3°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. Russia (CIS) operates approximately 1,272 active satellites in total, of which 10 share a similar altitude band with FREGAT R/B.
🔗 Spent Rocket Body
This is a spent rocket body — the upper stage of a launch vehicle that remains in orbit after delivering its payload. Rocket bodies are a significant contributor to the space debris population. Older stages often retained residual propellant that could later explode, creating debris fields. Modern guidelines require upper stages to either deorbit (controlled re-entry) or passivate (vent residual fuel) to reduce fragmentation risk. The FCC's 5-year deorbit rule and UN debris mitigation guidelines are increasingly enforced to address this growing problem.
❓ Frequently Asked Questions
FREGAT R/B orbits in Low Earth Orbit (LEO) at altitudes between 237 km (perigee) and 259 km (apogee), with an average altitude of approximately 248 km. It completes one orbit every 89 minutes, travelling at approximately 27,937 km/h (17,359 mph).
FREGAT R/B (NORAD ID 100142) is a spent rocket body — the upper stage of a launch vehicle attributed to Russia (CIS). It no longer serves a functional purpose but continues to orbit Earth as tracked debris. Spent upper stages are among the largest uncontrolled objects in orbit and are closely monitored for collision risk.
FREGAT R/B was launched on 2026-07-19 from Plesetsk Cosmodrome, Russia, Russia’s northern military cosmodrome, used primarily for high-inclination and polar orbit launches. At its current altitude, the estimated remaining orbital lifetime is: weeks to months. View the full satellite launch log.
Yes — Orbital Radar tracks FREGAT R/B (NORAD ID 100142) 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.
FREGAT R/B travels at approximately 27,937 km/h (17,359 mph) — roughly 7.76 km/s. It completes 16.11 orbits per day, meaning the crew or instruments aboard (if any) would experience approximately 32 sunrises and sunsets every 24 hours.