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EXPLORER 47 (IMP-7), 6197

Orbit data source: Space-Track

EXPLORER 47 (IMP-7), 6197 is a payload satellite owned by GSFC (US) that was launched on Sat, 23 Sep 1972 UTC via a DELTA 1604 launch vehicle from the Air Force Eastern Test Range (AFETR). 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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Iframe URL

https://www.satcat.com/sats-embedded/6197?theme=dark&initialShowStats=false

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Identifier

6197, 1972-073A

Orbit

Active

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

GSFC

Mission

Spacecraft

Bus & Motor

IMP, STAR 17A

Mass

390 kg wet, 266 kg dry

Launch date (UTC)

1972-09-23 (54 years ago)

Launch vehicle

DELTA 1604

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

RCS unknown

Expand to show TLE details & history
Last TLE update: 9 months ago

TLE from 9 months ago

0 EXPLORER 47 (IMP-7)
1  6197U 72073A   25193.82548704 -.00001053  00000-0  00000+0 0  9999
2  6197  48.3952  57.1732 1266560 176.6749 354.2394  0.07880551  3633

Epoch: 2025-07-12T19:48Z

TLE epoch observation values (Epoch: 2025-07-12T19:48:42.080Z)

Latitude

9.66114°

Longitude

0.93841°

Altitude

195,953.127 km

Speed

1.485 km/s

True Right ascension

15h 16m 17s

True Declination

9° 39' 33"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

00:46:42

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

252,536.009 km

Perigee altitude

194,322.978 km

Semi-major axis

229,807.63 km

Eccentricity

0.12666

Inclination

48.3952°

RAAN

57.1732°

Arg. of periapsis

176.6749°

True anomaly

352.513°

Mean anomaly

354.2394°

Eccentric anomaly

353.40608°

Mean motion

0.0197 °/min

Orbital period

18,272.84 mins

BSTAR

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Other satellites on launch #73 in the year 1972 (1972-09-23 UTC)

DELTA 1 R/B(1), 6202 (Decayed)

DELTA 1 DEB, 6204 (Decayed)

DELTA 1 DEB, 6205 (Decayed)

DELTA 1 R/B(2), 6203 (Decayed)

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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

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EXPLORER 47 (IMP-7) Visibility forecast

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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.
945 mins	2026-04-01 19:06:34.301Z	55.458° ENE	2026-04-02 00:57:34.301Z	0.634° NNE	44.614°	2026-04-02 10:51:34.301Z	333.316° NNW
79 mins	2026-04-02 17:47:34.301Z	24.159° NE	2026-04-02 19:06:34.301Z	32.047° NE	15.981°	2026-04-02 19:06:34.301Z	32.047° NE

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out EXPLORER 47 (IMP-7), 6197 on other resources

View EXPLORER 47 (IMP-7), 6197 on NASA - NSSDCA Website

View EXPLORER 47 (IMP-7), 6197 on Heavens-Above

View EXPLORER 47 (IMP-7), 6197 on Keep Track

View EXPLORER 47 (IMP-7), 6197 on Celestrak

View EXPLORER 47 (IMP-7), 6197 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

EXPLORER 47 (IMP-7), 6197

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 9 months ago

TLE from 9 months ago

TLE epoch observation values (Epoch: 2025-07-12T19:48:42.080Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #73 in the year 1972 (1972-09-23 UTC)

EXPLORER 47 (IMP-7) Visibility forecast

Co-orbital & Co-planar RSOs

Check out EXPLORER 47 (IMP-7), 6197 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 9 months ago