Showing default

OPS 0856, 2403

Orbit data source: Space-Track

OPS 0856, 2403 is a payload satellite owned by USAF SSD (US) in LEO that was launched on Fri, 19 Aug 1966 UTC via an ATLAS SLV-3 AGENA D 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/2403?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/2403?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

2403, 1966-077A

Orbit

LEO

Last TLE update

1 day ago

Origin

United States Space Force (US)

Manufacturer

LMSC

Mission

Defense Early Warn

Bus & Motor

MIDAS, Unknown motor

Mass

~2,000 kg wet, ~1,000 kg dry

Launch date (UTC)

1966-08-19 (59 years ago)

Launch vehicle

ATLAS SLV-3 AGENA D

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cone + Cyl + 2 Pan, 1.5 m

Radar Cross Section

4.418 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 1 day ago

0 OPS 0856
1 02403U 66077A   25199.58788288 -.00000010  00000-0 -58509-2 0  9997
2 02403  90.3387 272.4851 0009685  60.7258 299.4561  8.59852049497787

Epoch: 2025-07-18T14:06Z

TLE epoch observation values (Epoch: 2025-07-18T14:06:33.08Z)

Latitude

-0.00001°

Longitude

124.21007°

Altitude

3,683.62 km

Speed

6.296 km/s

True Right ascension

18h 09m 56s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

34.49966°

Longitude

123.99082°

Altitude

3,681.496 km

Speed

6.301 km/s

Apparent Right ascension

17h 29m 00s

Apparent Declination

7° 07' 34"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

04:20:29

Azimuth

337.446° NNW

Elevation

-40.369°

Doppler factor

Orbital elements

Apogee altitude

3,693.784 km

Perigee altitude

3,674.293 km

Semi-major axis

10,062.175 km

Eccentricity

0.00097

Inclination

90.3387°

RAAN

272.4851°

Arg. of periapsis

60.7258°

True anomaly

299.35941°

Mean anomaly

299.4561°

Eccentric anomaly

299.40776°

Mean motion

2.15033 °/min

Orbital period

167.42 mins

BSTAR

-0.0058509

Loading maneuver chart data...

Loading SW <> Apogee altitude chart data...

Loading historical data...

Other satellites on launch #77 in the year 1966 (1966-08-19 UTC)

SECOR 7 (EGRS 7), 2411

OPS 0856 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.
36 mins	2025-07-19 16:01:14.958Z	6.329° NNE	2025-07-19 16:19:14.958Z	84.206° E	40.727°	2025-07-19 16:37:14.958Z	163.285° S
32 mins	2025-07-19 18:49:14.958Z	353.073° N	2025-07-19 19:04:14.958Z	295.001° NW	33.92°	2025-07-19 19:21:14.958Z	229.599° WSW
26 mins	2025-07-20 02:34:14.958Z	105.931° ESE	2025-07-20 02:47:14.958Z	57.809° ENE	25.283°	2025-07-20 03:00:14.958Z	10.746° NNE
36 mins	2025-07-20 05:13:14.958Z	178.256° S	2025-07-20 05:30:14.958Z	263.557° W	44.764°	2025-07-20 05:49:14.958Z	357.48° N
23 mins	2025-07-20 08:10:14.958Z	258.93° W	2025-07-20 08:21:14.958Z	297.767° NW	18.297°	2025-07-20 08:33:14.958Z	339.726° N
27 mins	2025-07-20 14:24:14.958Z	19.043° NNE	2025-07-20 14:37:14.958Z	67.159° ENE	23.212°	2025-07-20 14:51:14.958Z	118.084° SE

Co-orbital & Co-planar RSOs

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

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 ascending order

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 ascending order

Check out OPS 0856, 2403 on other resources

View OPS 0856, 2403 on NASA - NSSDCA Website

View OPS 0856, 2403 on Heavens-Above

View OPS 0856, 2403 on Keep Track

View OPS 0856, 2403 on Celestrak

View OPS 0856, 2403 on Gunter's Space Page

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