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SSTL S1-4, 43618

Orbit data source: Space-Track

SSTL S1-4, 43618 is a payload satellite owned by SSTL (Astrium) (UK) in SSO that was launched on Sun, 16 Sep 2018 UTC via a PSLV launch vehicle from the Sirharikota (SRI). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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Identifier
43618, 2018-071A
Orbit
SSO
Last TLE update
8 hours ago
Origin
Manufacturer
SSTL (Astrium)
Mission
Operational Commercial Imaging
Bus & Motor
SSTL-300S1, Unknown motor
Mass
444 kg wet, 400 kg dry
Launch date (UTC)
2018-09-16 (7 years ago)
Launch vehicle
PSLV
Launch site
Sirharikota (SRI)
Object type
Payload
Rocket body
Debris
Shape & HBR
Hept Cone + Cyl, 2.5 m
Radar Cross Section
2.356 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 8 hours ago
0 SSTL S1-4
1 43618U 18071A   25128.94395342  .00001742  00000-0  16076-3 0  9993
2 43618  97.5598  10.8852 0003745  81.3196 278.8449 14.95883146362493
Epoch: 2025-05-08T22:39Z
Definitive object data (Epoch: 2025-05-08T22:39:17.575Z)
Latitude
-0.00009°
Longitude
164.05479°
Altitude
582.286 km
Speed
7.569 km/s
True Right ascension
00h 43m 32s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at TLE epoch
Visualization TLE readout
Latitude
-55.18464°
Longitude
175.30894°
Altitude
602.942 km
Speed
7.556 km/s
Apparent Right ascension
02h 05m 04s
Apparent Declination
-48° 00' 49"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
14:34:48
Azimuth
149.074° SSE
Elevation
-80.305°
Doppler factor
1
Orbital elements
Apogee altitude
579.242 km
Perigee altitude
574.033 km
Semi-major axis
6,954.775 km
Eccentricity
0.0003745
Inclination
97.5598°
RAAN
10.8852°
Arg. of periapsis
81.3196°
True anomaly
278.80249°
Mean anomaly
278.8449°
Eccentric anomaly
278.8237°
Mean motion
3.74213 °/min
BSTAR
0.00016076
Orbital period
96.2 mins
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Other satellites on launch #71 in the year 2018 (2018-09-16 UTC)

SSTL S1-4 Visibility forecast

Observer location: undefined°, undefined°

Span
Click to sort rows by Start time (UTC) header in descending order
Start Az.
Max El. time (UTC)
Max El. Az.
Max El.
End time (UTC)
End Az.
6 mins2025-05-09 16:26:58.934Z191.05° SSW2025-05-09 16:28:58.934Z235.298° WSW37.226°2025-05-09 16:32:58.934Z336.11° NNW
5 mins2025-05-10 04:08:58.934Z58.394° ENE2025-05-10 04:10:58.934Z98.044° ESE20.87°2025-05-10 04:13:58.934Z146.561° SSE
5 mins2025-05-10 05:43:58.934Z334.102° NNW2025-05-10 05:45:58.934Z293.536° NW24.049°2025-05-10 05:48:58.934Z237.546° WSW
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