Showing default

SECOR 4 (EGRS 4), 1315

Orbit data source: Space-Track

SECOR 4 (EGRS 4), 1315 is an American payload satellite in LEO that was launched on Sat, 03 Apr 1965 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/1315?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/1315?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

1315, 1965-027B

Orbit

LEO

Country

Related business

United States Army (US)

Manufacturer

ITT

Mission

Spacecraft

Bus & Motor

SECOR, Unknown motor

Mass

18 kg wet, 18 kg dry

Launch date (UTC)

1965-04-03 (62 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

BOX, 1.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 6 hours ago

TLE from 6 hours ago

0 SECOR 4 (EGRS 4)
1  1315U 65027B   26317.73413309  .00000089  00000-0  29910-3 0  9990
2  1315  90.2596  19.0394 0031554 166.8698 319.2638 12.92670043906248

Epoch: 2026-11-13T17:37Z

TLE epoch observation values (Epoch: 2026-11-13T17:37:09.098Z)

Latitude

54.19387°

Longitude

-117.73947°

Altitude

1,281.604 km

Speed

7.229 km/s

True Right ascension

13h 17m 35s

True Declination

54° 02' 30"

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

20:09:02

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,312.269 km

Perigee altitude

1,263.889 km

Semi-major axis

7,666.216 km

Eccentricity

0.00316

Inclination

90.2596°

RAAN

19.0394°

Arg. of periapsis

166.8698°

True anomaly

319.02713°

Mean anomaly

319.2638°

Eccentric anomaly

319.14554°

Mean motion

3.23349 °/min

Orbital period

111.33 mins

BSTAR

0.0002991

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #27 in the year 1965 (1965-04-03 UTC)

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

SECOR 4 (EGRS 4) 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.
13 mins	2026-11-14 04:13:07.649Z	159.793° S	2026-11-14 04:19:07.649Z	94.471° ESE	64.569°	2026-11-14 04:26:07.649Z	4.819° NNE
10 mins	2026-11-14 06:06:07.649Z	235.921° WSW	2026-11-14 06:11:07.649Z	281.387° WNW	23.663°	2026-11-14 06:16:07.649Z	326.415° NNW
13 mins	2026-11-14 15:53:07.649Z	18.303° NNE	2026-11-14 15:59:07.649Z	88.043° E	47.085°	2026-11-14 16:06:07.649Z	158.735° S
11 mins	2026-11-14 17:45:07.649Z	335.251° NNW	2026-11-14 17:50:07.649Z	281.121° WNW	32.214°	2026-11-14 17:56:07.649Z	226.474° WSW

Items per page:

1–4 of 4 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

Authenticating...

Click to sort rows by Event ID header in ascending order	Click to sort rows by Pc header in ascending order	Click to sort rows by Md header in ascending order	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 TCA header in descending order

Check out SECOR 4 (EGRS 4), 1315 on other resources

View SECOR 4 (EGRS 4), 1315 on NASA - NSSDCA Website

View SECOR 4 (EGRS 4), 1315 on Heavens-Above

View SECOR 4 (EGRS 4), 1315 on Keep Track

View SECOR 4 (EGRS 4), 1315 on Celestrak

View SECOR 4 (EGRS 4), 1315 on Gunter's Space Page

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

SECOR 4 (EGRS 4), 1315

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 6 hours ago

TLE from 6 hours ago

TLE epoch observation values (Epoch: 2026-11-13T17:37:09.098Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #27 in the year 1965 (1965-04-03 UTC)

SECOR 4 (EGRS 4) Visibility forecast

Co-orbital & Co-planar RSOs

Check out SECOR 4 (EGRS 4), 1315 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 6 hours ago