DELTA 2 R/B(1), 20453

Orbit data source: Space-Track

DELTA 2 R/B(1), 20453 is space debris in LEO originally from a launch on Wed, 24 Jan 1990 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/20453?theme=dark&initialShowStats=false

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Identifier

20453, 1990-008B

Orbit

LEO

Country

Related business

MDA Inc. (CA)

Manufacturer

MDAC-HB

Mission

Spacecraft

Bus & Motor

DELTA/0020, Unknown motor

Mass

919 kg wet, 919 kg dry

Launch date (UTC)

1990-01-24 (36 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + Cone, 3.0 m

Radar Cross Section

13.779 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 DELTA 2 R/B(1)
1 20453U 90008B   26182.94304548  .00101038  00000-0  67237-3 0  9998
2 20453  35.6000 136.7735 0064180 253.2131 106.1561 15.71224893944029

Epoch: 2026-07-01T22:37Z

TLE epoch observation values (Epoch: 2026-07-01T22:37:59.129Z)

Latitude

-0.00002°

Longitude

-122.71545°

Altitude

366.621 km

Speed

7.685 km/s

True Right ascension

09h 07m 05s

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

06:51:37

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

401.853 km

Perigee altitude

315.38 km

Semi-major axis

6,736.754 km

Eccentricity

0.00642

Inclination

35.6°

RAAN

136.7735°

Arg. of periapsis

253.2131°

True anomaly

106.86091°

Mean anomaly

106.1561°

Eccentric anomaly

106.50867°

Mean motion

3.92525 °/min

Orbital period

91.71 mins

BSTAR

0.00067237

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Other satellites on launch #8 in the year 1990 (1990-01-24 UTC)

NAVSTAR 18 (USA 50), 20452

DELTA 2 R/B(2) (PAM-D), 20450 (Decayed)

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DELTA 2 R/B(1) 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.
4 mins	2026-07-04 01:14:49.850Z	221.999° SW	2026-07-04 01:16:49.850Z	163.745° S	26.569°	2026-07-04 01:18:49.850Z	113.683° SE
4 mins	2026-07-04 02:51:49.850Z	228.098° WSW	2026-07-04 02:52:49.850Z	191.745° SSW	29.751°	2026-07-04 02:55:49.850Z	118.257° SE

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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 2 R/B(1), 20453 on other resources

View DELTA 2 R/B(1), 20453 on Heavens-Above

View DELTA 2 R/B(1), 20453 on Keep Track

View DELTA 2 R/B(1), 20453 on Celestrak

View DELTA 2 R/B(1), 20453 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 2 R/B(1), 20453

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-07-01T22:37:59.129Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #8 in the year 1990 (1990-01-24 UTC)

DELTA 2 R/B(1) Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 2 R/B(1), 20453 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago