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BD-18, 40748

Orbit data source: Space-Track

BD-18, 40748 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.

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<iframe src="https://www.satcat.com/sats-embedded/40748?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/40748?theme=dark&initialShowStats=false

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Identifier

40748, 2015-037A

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 (10 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: 23 hours ago

TLE from 23 hours ago

0 BD-18
1 40748U 15037A   26019.05121815 -.00000052  00000-0  00000-0 0  9998
2 40748  55.0041 307.1821 0010822 275.3563  84.5529  1.86232214 71343

Epoch: 2026-01-19T01:13Z

TLE epoch observation values (Epoch: 2026-01-19T01:13:45.248Z)

Latitude

0.00003°

Longitude

170.28279°

Altitude

21,525.315 km

Speed

3.78 km/s

True Right ascension

20h 28m 41s

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

01:29:33

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

21,558.137 km

Perigee altitude

21,497.737 km

Semi-major axis

27,906.074 km

Eccentricity

0.00108

Inclination

55.0041°

RAAN

307.1821°

Arg. of periapsis

275.3563°

True anomaly

84.67637°

Mean anomaly

84.5529°

Eccentric anomaly

84.61463°

Mean motion

0.46558 °/min

Orbital period

773.23 mins

BSTAR

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

YZ-1 R/B, 40751

BD-19, 40749

CZ-3B R/B, 40750

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BD-18 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.
309 mins	2026-01-20 05:15:23.563Z	312.491° NW	2026-01-20 07:51:23.563Z	271.252° WNW	39.18°	2026-01-20 10:24:23.563Z	208.033° SW
226 mins	2026-01-20 15:40:23.563Z	119.015° SE	2026-01-20 17:36:23.563Z	72.647° E	28.301°	2026-01-20 19:26:23.563Z	37.92° NE

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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 BD-18, 40748 on other resources

View BD-18, 40748 on NASA - NSSDCA Website

View BD-18, 40748 on Heavens-Above

View BD-18, 40748 on Keep Track

View BD-18, 40748 on Celestrak

View BD-18, 40748 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-18, 40748

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 23 hours ago

TLE from 23 hours ago

TLE epoch observation values (Epoch: 2026-01-19T01:13:45.248Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

BD-18 Visibility forecast

Co-orbital & Co-planar RSOs

Check out BD-18, 40748 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 23 hours ago