MMS 4 (40485)

COSPAR: 2015-011D | Alt Name: MMS 4

Image
MMS 4 Satellite Image
Additional Sources
Launch Details

Launch Date

March 13, 2015

Launch Pad

SLC41

Launch Vehicle

Atlas V 421

Orbital Elements

NORAD ID

40485

International Designator

2015-011D

Epoch

Sat, 04 Jul 2026 08:00:03 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

72.54°

Right Ascension

348.53°

Eccentricity

Calculating...

Argument of Perigee

167.78°

Period

5081.59 min

Mean Motion

0.28 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot
3D Visualization
Basic Satellite Info

Name

MMS 4

Alternative Name

MMS 4

Type

Payload

Status

Operational

Owner

GSFC

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 40485U 15011D   26185.33336806 -.00000826  00000-0  00000-0 0  9990
2 40485  72.5445 348.5265 8324633 167.7792 247.5703  0.28337579  1385

Source: Celestrak

Summary
MMS 4 is a satellite operated by GSFC for Magnetospheric Research, launched on March 13, 2015, from Cape Canaveral Air Force Station's SLC-41 using an Atlas V 421 launch vehicle. The spacecraft has dimensions of 1.2 meters in length and 3.6 meters in diameter with a span of 112 meters, featuring a cylindrical shape with antennae. It has a dry mass of 1000 kilograms and a launch mass of 1360 kilograms. Equipped with solar cells and batteries for power supply, the satellite's mission is to conduct magnetospheric research. The MMS 4 was manufactured by GSFC and has a designed lifetime of approximately 2.5 years.
Physical Characteristics

Length

1.2

Diameter

3.6

Span

112

Dry Mass

1000

Launch Mass

1360

Shape

Cylinder+antennae

Radar Cross Section

2.1286

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Magnetospheric Multiscale

Purpose

Magnetospheric Research

Mission

Magnetospheric Research

Manufacturer

GSFC

Life Expectancy

2.5 years

Bus

MMS-SMART

Configuration

Unknown

Motor

GSFC

Equipment

see above

Power System

Solar cells, batteries

ADCS

Unknown

Transmitter Frequency

Unknown

Map
This tool will help you track the satellite's position and predict its upcoming passes over your location. Simply input the coordinates or click the geolocation button to get started.
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration

Satellite Articles

View All Posts »

Learn more about satellites and other related topics.

X Report 6 Feb 2025

X Report 6 Feb 2025

SpaceX prepares for a new cargo-return mission with Atmos, deploys imaging satellites, and gears up for Axiom-4 private astronaut launch.

X Report 5 Dec 2024

X Report 5 Dec 2024

SpaceX achieves new milestones with Starlink launches, and Elon Musk's influence is a point of discussion. Telesat makes strides amid Starlink's growing dominance.

X Report 26 Nov 2024

X Report 26 Nov 2024

SpaceX sets launch milestones with quick turnarounds and new Starlink deployments, while eyeing rapid Starship expansions next year.

NASA Ends MAVEN After 6-Month Contact Loss; Falcon 9 Sets 35th Reuse Record | KeepTrack Space Brief

NASA Ends MAVEN After 6-Month Contact Loss; Falcon 9 Sets 35th Reuse Record | KeepTrack Space Brief

NASA concludes MAVEN mission after six months attempting to restore contact with Mars probe. Meanwhile, Falcon 9 booster flies record 35th flight on Starlink 10-35 mission.

FAA Grounds Starship V3 for Mishap Probe, X Report 29 May 2026

FAA Grounds Starship V3 for Mishap Probe, X Report 29 May 2026

FAA grounds Starship pending a mishap investigation into the V3 debut flight; return to flight hinges on FAA sign-off. Starlink 10-53 added 29 sats.

DROID.002 - Turion Space's Eyes on the Orbital Junkyard

DROID.002 - Turion Space's Eyes on the Orbital Junkyard

A 90-kilogram spacecraft with iodine thrusters and two Australian-built cameras is quietly building the case that tracking space debris is a business worth billions - and that a four-year-old startup from Irvine can own it.

Starship V3 Static Fire Sets Up Flight 12, X Report 16 Apr 2026

Starship V3 Static Fire Sets Up Flight 12, X Report 16 Apr 2026

Starship V3 completes its first full-duration static fire in April 2026, with Flight 12 targeting May. Dual Falcon 9s push Starlink to 10,242 working.

The Day America's Moon Rocket Began Its Journey

The Day America's Moon Rocket Began Its Journey

Fifty-nine years ago, a revolutionary new rocket thundered skyward from Cape Kennedy, testing the spacecraft that would eventually carry astronauts to the lunar surface