SL-3 R/B, 877

Orbit data source: Space-Track

SL-3 R/B, 877 is space debris in LEO originally from a launch on Fri, 28 Aug 1964 UTC launched from the Tyuratam Missile And Space Complex (TTMTR). 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/877?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/877?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

877, 1964-053B

Orbit

LEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

Progress

Mission

Spacecraft

Bus & Motor

BLOK-E, Unknown motor

Mass

1,440 kg wet, 1,440 kg dry

Launch date (UTC)

1964-08-28 (62 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 19 hours ago

TLE from 19 hours ago

0 SL-3 R/B
1 00877U 64053B   26065.13332542  .00000403  00000-0  10214-3 0  9990
2 00877  65.0789 341.6631 0079616 293.3488  65.9250 14.61364246266276

Epoch: 2026-03-06T03:11Z

TLE epoch observation values (Epoch: 2026-03-06T03:11:59.316Z)

Latitude

-0.00001°

Longitude

129.79224°

Altitude

668.2 km

Speed

7.535 km/s

True Right ascension

22h 46m 39s

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

02:20:04

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

743.573 km

Perigee altitude

631.068 km

Semi-major axis

7,065.458 km

Eccentricity

0.00796

Inclination

65.0789°

RAAN

341.6631°

Arg. of periapsis

293.3488°

True anomaly

66.76134°

Mean anomaly

65.925°

Eccentric anomaly

66.34283°

Mean motion

3.65454 °/min

Orbital period

98.51 mins

BSTAR

0.00010214

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #53 in the year 1964 (1964-08-28 UTC)

SL-3 DEB, 21126

COSMOS 44, 876

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

SL-3 R/B 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	2026-03-07 04:21:54.268Z	342.451° N	2026-03-07 04:25:54.268Z	39.684° NE	34.588°	2026-03-07 04:30:54.268Z	124.303° SE
6 mins	2026-03-07 06:04:54.268Z	288.864° WNW	2026-03-07 06:07:54.268Z	241.04° WSW	22.118°	2026-03-07 06:10:54.268Z	201.135° SSW
5 mins	2026-03-07 18:45:54.268Z	139.992° SSE	2026-03-07 18:47:54.268Z	108.226° ESE	19.824°	2026-03-07 18:50:54.268Z	66.575° ENE
7 mins	2026-03-07 20:25:54.268Z	241.568° WSW	2026-03-07 20:28:54.268Z	307.424° NW	36.316°	2026-03-07 20:32:54.268Z	17.505° NNE

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

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 SL-3 R/B, 877 on other resources

View SL-3 R/B, 877 on Heavens-Above

View SL-3 R/B, 877 on Keep Track

View SL-3 R/B, 877 on Celestrak

View SL-3 R/B, 877 on Gunter's Space Page

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

SL-3 R/B, 877

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2026-03-06T03:11:59.316Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #53 in the year 1964 (1964-08-28 UTC)

SL-3 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-3 R/B, 877 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 19 hours ago