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MMS 4, 40485

Orbit data source: Space-Track

MMS 4, 40485 is a payload satellite owned by GSFC (US) in HEO that was launched on Fri, 13 Mar 2015 UTC via an ATLAS V 421 launch vehicle from the Air Force Eastern Test Range (AFETR). 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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https://www.satcat.com/sats-embedded/40485?theme=dark&initialShowStats=false

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Identifier

40485, 2015-011D

Orbit

HEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

GSFC

Mission

Operational Civil Science

Bus & Motor

MMS-SMART, GSFC

Mass

1,360 kg wet, 1,000 kg dry

Launch date (UTC)

2015-03-13 (11 years ago)

Launch vehicle

ATLAS V 421

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Oct Cyl + 1 Ant, 56.1 m

Radar Cross Section

24.177 m², Large (>1 m²)

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Last TLE update: 4 hours ago

TLE from 4 hours ago

0 MMS 4
1 40485U 15011D   25342.66670139 -.00000532  00000-0  00000-0 0  9994
2 40485  69.1982 351.5869 8510767 163.2819 305.9494  0.28272778  1366

Epoch: 2025-12-08T16:00Z

TLE epoch observation values (Epoch: 2025-12-08T16:00:03.000Z)

Latitude

9.00912°

Longitude

37.86411°

Altitude

107,678.125 km

Speed

1.71 km/s

True Right ascension

23h 42m 09s

True Declination

9° 00' 21"

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

18:38:09

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

175,135.78 km

Perigee altitude

8,225.067 km

Semi-major axis

98,058.561 km

Eccentricity

0.85108

Inclination

69.1982°

RAAN

351.5869°

Arg. of periapsis

163.2819°

True anomaly

205.9673°

Mean anomaly

305.9494°

Eccentric anomaly

258.2143°

Mean motion

0.07068 °/min

Orbital period

5,093.16 mins

BSTAR

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Computing Atmospheric mass density...

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Other satellites on launch #11 in the year 2015 (2015-03-13 UTC)

MMS 1, 40482

MMS 2, 40483

MMS 3, 40484

ATLAS 5 CENTAUR R/B, 40486 (Decayed)

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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

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MMS 4 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.
454 mins	2025-12-08 20:27:14.491Z	82.313° E	2025-12-09 01:52:14.491Z	59.575° ENE	44.148°	2025-12-09 04:01:14.491Z	35.947° 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 MMS 4, 40485 on other resources

View MMS 4, 40485 on NASA - NSSDCA Website

View MMS 4, 40485 on Heavens-Above

View MMS 4, 40485 on Keep Track

View MMS 4, 40485 on Celestrak

View MMS 4, 40485 on Gunter's Space Page

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

MMS 4, 40485

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 4 hours ago

TLE from 4 hours ago

TLE epoch observation values (Epoch: 2025-12-08T16:00:03.000Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #11 in the year 2015 (2015-03-13 UTC)

MMS 4 Visibility forecast

Co-orbital & Co-planar RSOs

Check out MMS 4, 40485 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 4 hours ago