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OPS 6911 (VELA 10), 3955

Orbit data source: Space-Track

OPS 6911 (VELA 10), 3955 is a payload satellite owned by SAMSO (US) in HEO that was launched on Fri, 23 May 1969 UTC via a TITAN IIIC 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.

Not visible in the next 10 days

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/3955?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/3955?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

3955, 1969-046E

Orbit

HEO

Country

Related business

USAF Space and Missile Systems Organization (US)

Manufacturer

TRW

Mission

Spacecraft

Bus & Motor

VELA, BE-3A7

Mass

~365 kg wet, 250 kg dry

Launch date (UTC)

1969-05-23 (57 years ago)

Launch vehicle

TITAN IIIC

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 10 months ago

TLE from 10 months ago

0 OPS 6911 (VELA 10)
1 03955U 69046E   25220.60555884  .00000590  00000-0  00000-0 0  9993
2 03955  62.5463  63.7142 8192423 138.0677   0.4662  0.21421919  6344

Epoch: 2025-08-08T14:32Z

TLE epoch observation values (Epoch: 2025-08-08T14:32:00.283Z)

Latitude

22.80579°

Longitude

56.11098°

Altitude

15,777.682 km

Speed

5.71 km/s

True Right ascension

15h 25m 51s

True Declination

22° 45' 59"

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

01:06:07

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

208,266.027 km

Perigee altitude

14,948.646 km

Semi-major axis

117,985.473 km

Eccentricity

0.81924

Inclination

62.5463°

RAAN

63.7142°

Arg. of periapsis

138.0677°

True anomaly

8.15735°

Mean anomaly

0.4662°

Eccentric anomaly

2.57521°

Mean motion

0.05356 °/min

Orbital period

6,722.06 mins

BSTAR

Loading maneuver chart data...

Computing Atmospheric mass density...

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Other satellites on launch #46 in the year 1969 (1969-05-23 UTC)

TITAN 3C TRANSTAGE R/B, 3956

VELA 9/10 INTERSTAGE, 60001

ERS 29 (OV5-5), 3950

ERS 26 (OV5-6), 3951

OV5-9, 3952

OPS 6909 (VELA 9), 3954

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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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OPS 6911 (VELA 10) Visibility

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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.
OPS 6911 (VELA 10) is likely not visible in the next few days.

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

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Check out OPS 6911 (VELA 10), 3955 on other resources

View OPS 6911 (VELA 10), 3955 on NASA - NSSDCA Website

View OPS 6911 (VELA 10), 3955 on Heavens-Above

View OPS 6911 (VELA 10), 3955 on Keep Track

View OPS 6911 (VELA 10), 3955 on Celestrak

View OPS 6911 (VELA 10), 3955 on Gunter's Space Page

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

OPS 6911 (VELA 10), 3955

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 10 months ago

TLE from 10 months ago

TLE epoch observation values (Epoch: 2025-08-08T14:32:00.283Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #46 in the year 1969 (1969-05-23 UTC)

OPS 6911 (VELA 10) Visibility

Co-orbital & Co-planar RSOs

Check out OPS 6911 (VELA 10), 3955 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 10 months ago