Showing default

BD-19, 40749

Orbit data source: Space-Track

BD-19, 40749 is a payload satellite owned by CNSA (CN) in MEO that was launched on Sat, 25 Jul 2015 UTC via a CHANG ZHENG 3B/YZ-1 launch vehicle from the Xichang Space Center, China (XSC). 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/40749?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/40749?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

40749, 2015-037B

Orbit

MEO

Country

CN / PRC

Related business

China National Space Administration (CN)

Manufacturer

CAST

Mission

Awaiting activation Defense Navigation

Bus & Motor

BD-3M, Unknown motor

Mass

1,014 kg wet, ~850 kg dry

Launch date (UTC)

2015-07-25 (11 years ago)

Launch vehicle

CHANG ZHENG 3B/YZ-1

Launch site

Xichang Space Center, China (XSC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 5.0 m

Radar Cross Section

8.984 m², Large (>1 m²)

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

TLE from 2 days ago

0 BD-19
1 40749U 15037B   26068.13345281 -.00000059  00000-0  00000-0 0  9994
2 40749  54.9552 305.4805 0004589  32.0664 328.0114  1.86254636 72265

Epoch: 2026-03-09T03:12Z

TLE epoch observation values (Epoch: 2026-03-09T03:12:10.322Z)

Latitude

-0°

Longitude

90.62542°

Altitude

21,515.091 km

Speed

3.781 km/s

True Right ascension

20h 21m 59s

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

01:23:28

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

21,538.504 km

Perigee altitude

21,512.894 km

Semi-major axis

27,903.836 km

Eccentricity

0.00046

Inclination

54.9552°

RAAN

305.4805°

Arg. of periapsis

32.0664°

True anomaly

327.98353°

Mean anomaly

328.0114°

Eccentric anomaly

327.99747°

Mean motion

0.46564 °/min

Orbital period

773.13 mins

BSTAR

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #37 in the year 2015 (2015-07-25 UTC)

CZ-3B R/B, 40750

BD-18, 40748

YZ-1 R/B, 40751

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

BD-19 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.
192 mins	2026-03-10 21:09:43.479Z	33.604° NE	2026-03-10 21:09:43.479Z	33.604° NE	42.173°	2026-03-11 00:21:43.479Z	113.376° SE
104 mins	2026-03-11 19:25:43.479Z	241.233° WSW	2026-03-11 21:09:43.479Z	276.764° WNW	33.495°	2026-03-11 21:09:43.479Z	276.764° WNW

Items per page:

1–2 of 2 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 BD-19, 40749 on other resources

View BD-19, 40749 on NASA - NSSDCA Website

View BD-19, 40749 on Heavens-Above

View BD-19, 40749 on Keep Track

View BD-19, 40749 on Celestrak

View BD-19, 40749 on Gunter's Space Page

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

BD-19, 40749

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: 2026-03-09T03:12:10.322Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #37 in the year 2015 (2015-07-25 UTC)

BD-19 Visibility forecast

Co-orbital & Co-planar RSOs

Check out BD-19, 40749 on other resources

Documentation

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