STARLINK-2503 (48151)

COSPAR: 2021-027BM | Alt Name: Starlink 2503

Image
STARLINK-2503 Satellite Image
Additional Sources
Launch Details

Launch Date

April 7, 2021

Launch Pad

LC40

Launch Vehicle

Falcon 9

Orbital Elements

NORAD ID

48151

International Designator

2021-027BM

Epoch

Sat, 04 Jul 2026 02:38:25 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

53.16°

Right Ascension

331.01°

Eccentricity

Calculating...

Argument of Perigee

91.57°

Period

94.01 min

Mean Motion

15.32 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot
3D Visualization
Basic Satellite Info

Name

STARLINK-2503

Alternative Name

Starlink 2503

Type

Payload

Status

Operational

Owner

SPXS

Country

United States

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 48151U 21027BM  26185.11002080  .00001717  00000-0  67071-4 0  9996
2 48151  53.1594 331.0120 0001410  91.5693 268.5470 15.31706735290525

Source: Celestrak

Summary
STARLINK-2503, also known as Starlink 2503, is a communication satellite manufactured by SpaceX and owned by SPXS. Launched on April 7, 2021, from LC40 at AFETR using the Falcon 9 launch vehicle, it has dimensions of 0.2 meters in length, 2.8 meters in diameter, and spans 9 meters. The satellite weighs 260 kilograms at launch with a dry mass of 248 kilograms and is equipped with a Ku/Ka-band payload (all) and optical inter-satellite links (a few prototypes). Its propulsion system includes Krypton ion thrusters, and it uses solar arrays and batteries for power. The satellite's shape is described as box + pan and serves the purpose of communication in space.

Starlink is a satellite constellation developed by SpaceX with the aim of providing global broadband internet coverage. Thousands of small satellites are deployed in low Earth orbit (LEO), enabling high-speed internet access even in remote areas. However, the rapid increase in satellites raises concerns about space debris and the potential for collisions, which can lead to further debris creation and endanger other spacecraft. Additionally, the sheer number of Starlink satellites can affect astronomical observations by increasing light pollution. Proper deorbiting plans and international coordination are essential to mitigate these challenges and ensure long-term sustainability in space.
Physical Characteristics

Length

0.2

Diameter

2.8

Span

9

Dry Mass

248

Launch Mass

260

Shape

Box + pan

Radar Cross Section

Unknown

Visual Magnitude

Unknown

Color

Unknown

Material Composition

Unknown

Technical Details

Payload

Starlink V1.0-L23-60

Purpose

Communication

Mission

Communication

Manufacturer

SPXS

Life Expectancy

Unknown

Bus

Starlink

Configuration

Unknown

Motor

Krypton ion thrusters

Equipment

Ku/Ka-band payload (all), optical inter-satellite links (a few prototypes)

Power System

Solar arrays, 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 26 Dec 2024

X Report 26 Dec 2024

Launch of 21 new Starlink satellites, featuring cell phone connectivity, and updates on NASA and SpaceX collaborative missions.

The Satellites the Size of a Studio Apartment

The Satellites the Size of a Studio Apartment

AST SpaceMobile's BlueBird constellation is a bet that raw aperture size wins. Each satellite unfolds a 64-square-meter phased-array antenna in orbit, the largest commercial antenna ever deployed. The company claims a stock smartphone on the ground can connect directly to it. The competition says the physics doesn't support that. Seventeen satellites in and a contract with AT&T, Verizon, and Vodafone, somebody's math is wrong.

X Report 14 Jul 2025

X Report 14 Jul 2025

SpaceX successfully launched the Dror 1 satellite for Israel Aerospace Industries, marking another step forward in their launch capabilities.

The Satellite That Found 22 Photons and Changed Astronomy

The Satellite That Found 22 Photons and Changed Astronomy

On April 27, 1961, a Scout rocket lifted a 37-kilogram NASA satellite into orbit from Wallops Island carrying the first serious instrument for detecting cosmic gamma rays. Explorer 11 operated for seven months before its tape recorder failed. In that time it registered 22 gamma-ray photons - a pitiful number by modern standards, but enough to launch an entire branch of astronomy.

Air Force Selects General Atomics, Anduril for CCA Wingmen | KeepTrack Space Brief

Air Force Selects General Atomics, Anduril for CCA Wingmen | KeepTrack Space Brief

Air Force awards CCA contracts to General Atomics and Anduril for autonomous fighter wingmen. Autonomy layer split across Anduril, Shield AI, and Collins Aerospace.

X Report 9 Mar 2025

X Report 9 Mar 2025

SpaceX reveals plans for Florida Starship launches, NASA teams up for dual missions, and FCC boosts satellite connectivity.

Starship V3 Launch Looms as Residents Sue Over Home Damage | KeepTrack X Report

Starship V3 Launch Looms as Residents Sue Over Home Damage | KeepTrack X Report

SpaceX faces a new lawsuit from Texas residents alleging Starship launches caused property damage, just as V3 flight preparations ramp up.

SpaceX S-1 Sinks Tesla 5%, Merger Talk Grows, X Report 2 Jun 2026

SpaceX S-1 Sinks Tesla 5%, Merger Talk Grows, X Report 2 Jun 2026

SpaceX IPO paperwork stokes Tesla merger predictions: the amended S-1 sank Tesla stock 5% in a day. Starlink stands at 10,492 working satellites.