Showing default

OPS 6026 (DMSP 4A F1), 2418

Orbit data source: Space-Track

OPS 6026 (DMSP 4A F1), 2418 is a payload satellite owned by USAF SSD (US) in SSO that was launched on Fri, 16 Sep 1966 UTC via a THOR BURNER 2 launch vehicle from the Air Force Western Test Range (AFWTR). 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/2418?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/2418?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

Identifier

2418, 1966-082A

Orbit

SSO

Country

Related business

United States Space Force (US)

Manufacturer

RCA/East Windsor

Mission

Non-operational spacecraft

Bus & Motor

DMSP BLOCK 4A, Unknown motor

Mass

79 kg wet, 79 kg dry

Launch date (UTC)

1966-09-16 (60 years ago)

Launch vehicle

THOR BURNER 2

Launch site

Air Force Western Test Range (AFWTR)

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: 14 hours ago

TLE from 14 hours ago

0 OPS 6026 (DMSP 4A F1)
1  2418U 66082A   26111.88964834  .00000271  00000-0  86195-4 0  9991
2  2418  98.3338 266.1545 0115141 194.2400 165.5537 14.43861312104160

Epoch: 2026-04-21T21:21Z

TLE epoch observation values (Epoch: 2026-04-21T21:21:05.616Z)

Latitude

-0.00002°

Longitude

95.92215°

Altitude

828.234 km

Speed

7.397 km/s

True Right ascension

17h 44m 37s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

18:44:22

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

824.87 km

Perigee altitude

660.885 km

Semi-major axis

7,121.015 km

Eccentricity

0.01151

Inclination

98.3338°

RAAN

266.1545°

Arg. of periapsis

194.24°

True anomaly

165.87833°

Mean anomaly

165.5537°

Eccentric anomaly

165.71646°

Mean motion

3.61186 °/min

Orbital period

99.67 mins

BSTAR

0.000086195

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #82 in the year 1966 (1966-09-16 UTC)

THOR BURNER 2 R/B, 2422

Did you know?

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

Click here to try in Sandbox

OPS 6026 (DMSP 4A F1) Visibility forecast

Loading observer location...
Set Observer location

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.
9 mins	2026-04-22 22:52:39.081Z	20.592° NNE	2026-04-22 22:57:39.081Z	131.643° SE	40.064°	2026-04-22 23:01:39.081Z	181.741° SSW
8 mins	2026-04-23 10:04:39.081Z	156.333° SSE	2026-04-23 10:07:39.081Z	115.63° SE	43.352°	2026-04-23 10:12:39.081Z	351.23° N

Items per page:

1–2 of 2 items

of 1 page

Co-orbital & Co-planar RSOs

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

Please sign-in to view Co-orbital & Co-planar RSOs.

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

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

Check out OPS 6026 (DMSP 4A F1), 2418 on other resources

View OPS 6026 (DMSP 4A F1), 2418 on NASA - NSSDCA Website

View OPS 6026 (DMSP 4A F1), 2418 on Heavens-Above

View OPS 6026 (DMSP 4A F1), 2418 on Keep Track

View OPS 6026 (DMSP 4A F1), 2418 on Celestrak

View OPS 6026 (DMSP 4A F1), 2418 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 6026 (DMSP 4A F1), 2418

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2026-04-21T21:21:05.616Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #82 in the year 1966 (1966-09-16 UTC)

OPS 6026 (DMSP 4A F1) Visibility forecast

Co-orbital & Co-planar RSOs

Check out OPS 6026 (DMSP 4A F1), 2418 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 14 hours ago