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UME 1 (ISS 1), 8709

Orbit data source: Space-Track

UME 1 (ISS 1), 8709 is a payload satellite owned by NASDA (JP) in LEO that was launched on Sun, 29 Feb 1976 UTC via an N-1 launch vehicle from the Tanegashima Space Center (TNSTA). 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/8709?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

8709, 1976-019A

Orbit

LEO

Last TLE update

7 hours ago

Origin

JAXA (Japan Aerospace Exploration Agency) (JP / JPN)

Manufacturer

MELCO

Mission

Non-operational Civil Science

Bus & Motor

ISS, Unknown motor

Mass

135 kg wet, 135 kg dry

Launch date (UTC)

1976-02-29 (49 years ago)

Launch vehicle

N-1

Launch site

Tanegashima Space Center (TNSTA)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 0.5 m

Radar Cross Section

0.817 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 7 hours ago

0 UME 1 (ISS 1)
1 08709U 76019A   25201.97488920 -.00000018  00000-0  37990-4 0  9996
2 08709  69.6743 106.4632 0012521 317.7200  53.5447 13.71705800471679

Epoch: 2025-07-20T23:23Z

TLE epoch observation values (Epoch: 2025-07-20T23:23:50.426Z)

Latitude

10.62415°

Longitude

-179.52321°

Altitude

989.489 km

Speed

7.361 km/s

True Right ascension

07h 21m 42s

True Declination

10° 33' 50"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-17.60527°

Longitude

169.20307°

Altitude

991.206 km

Speed

7.36 km/s

Apparent Right ascension

06h 51m 02s

Apparent Declination

-27° 52' 05"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

19:11:44

Azimuth

21.124° NNE

Elevation

-77.215°

Doppler factor

Orbital elements

Apogee altitude

1,000.78 km

Perigee altitude

982.325 km

Semi-major axis

7,369.689 km

Eccentricity

0.00125

Inclination

69.6743°

RAAN

106.4632°

Arg. of periapsis

317.72°

True anomaly

53.66021°

Mean anomaly

53.5447°

Eccentric anomaly

53.60244°

Mean motion

3.43059 °/min

Orbital period

104.94 mins

BSTAR

0.00003799

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Other satellites on launch #19 in the year 1976 (1976-02-29 UTC)

N-1 R/B, 8710

UME 1 (ISS 1) 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.
11 mins	2025-07-21 18:42:07.599Z	186.482° SSW	2025-07-21 18:48:07.599Z	88.911° E	40.423°	2025-07-21 18:53:07.599Z	33.661° NE
8 mins	2025-07-21 20:32:07.599Z	266.731° W	2025-07-21 20:36:07.599Z	316.13° NNW	22.783°	2025-07-21 20:40:07.599Z	358.787° N
10 mins	2025-07-22 03:55:07.599Z	354.652° N	2025-07-22 03:59:07.599Z	52.104° ENE	35.198°	2025-07-22 04:05:07.599Z	129.17° SE
9 mins	2025-07-22 05:43:07.599Z	302.769° NW	2025-07-22 05:47:07.599Z	248.903° W	26.736°	2025-07-22 05:52:07.599Z	197.692° SSW

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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Check out UME 1 (ISS 1), 8709 on other resources

View UME 1 (ISS 1), 8709 on NASA - NSSDCA Website

View UME 1 (ISS 1), 8709 on Heavens-Above

View UME 1 (ISS 1), 8709 on Keep Track

View UME 1 (ISS 1), 8709 on Celestrak

View UME 1 (ISS 1), 8709 on Gunter's Space Page

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