DELTA 4 R/B, 40535

Orbit data source: Space-Track

DELTA 4 R/B, 40535 is space debris in MEO originally from a launch on Wed, 25 Mar 2015 UTC launched from the Air Force Eastern Test Range (AFETR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.

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Iframe URL

https://www.satcat.com/sats-embedded/40535?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

40535, 2015-013B

Orbit

MEO

Country

Related business

United Launch Alliance/Lockheed Martin (US)

Manufacturer

ULA Decatur

Mission

Spacecraft

Bus & Motor

DCSS-4, RL10B-2

Mass

2,850 kg wet, 2,850 kg dry

Launch date (UTC)

2015-03-25 (11 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 1 Nozzle, 6.0 m

Radar Cross Section

43.982 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 18 hours ago

TLE from 18 hours ago

0 DELTA 4 R/B
1 40535U 15013B   26072.10292750  .00000023  00000-0  00000-0 0  9995
2 40535  52.6688 219.8377 0034237  66.4174 293.9068  1.92974629 77301

Epoch: 2026-03-13T02:28Z

TLE epoch observation values (Epoch: 2026-03-13T02:28:12.936Z)

Latitude

-0°

Longitude

12.03109°

Altitude

20,836.727 km

Speed

3.83 km/s

True Right ascension

14h 39m 18s

True Declination

0° 00' 00"

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

00:36:23

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

20,967.475 km

Perigee altitude

20,780.868 km

Semi-major axis

27,252.308 km

Eccentricity

0.00342

Inclination

52.6688°

RAAN

219.8377°

Arg. of periapsis

66.4174°

True anomaly

293.54751°

Mean anomaly

293.9068°

Eccentric anomaly

293.72722°

Mean motion

0.48243 °/min

Orbital period

746.22 mins

BSTAR

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Other satellites on launch #13 in the year 2015 (2015-03-25 UTC)

NAVSTAR 73 (USA 260), 40534

DELTA 4 DEB, 40597 (Decayed)

DELTA 4 DEB, 40649

DELTA 4 DEB, 40599 (Decayed)

DELTA 4 DEB, 40598 (Decayed)

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DELTA 4 R/B Visibility forecast

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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.
118 mins	2026-03-13 20:10:59.038Z	144.093° SSE	2026-03-13 20:10:59.038Z	144.093° SSE	41.158°	2026-03-13 22:08:59.038Z	159.367° S
195 mins	2026-03-14 16:55:59.038Z	284.756° WNW	2026-03-14 20:10:59.038Z	261.095° W	44.709°	2026-03-14 20:10:59.038Z	261.095° W

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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 DELTA 4 R/B, 40535 on other resources

View DELTA 4 R/B, 40535 on Heavens-Above

View DELTA 4 R/B, 40535 on Keep Track

View DELTA 4 R/B, 40535 on Celestrak

View DELTA 4 R/B, 40535 on Gunter's Space Page

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

DELTA 4 R/B, 40535

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 18 hours ago

TLE from 18 hours ago

TLE epoch observation values (Epoch: 2026-03-13T02:28:12.936Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #13 in the year 2015 (2015-03-25 UTC)

DELTA 4 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 4 R/B, 40535 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 18 hours ago