X Report 8 Feb 2025
SpaceX makes strides on Starship launch pad, upcoming Starlink infusions from California and Florida, and regulatory challenges loom with FCC and C-band spectrum.
ASTRA 4A (32299)
COSPAR: 2007-057A | Alt Name: Sirius 4
Image
Additional Sources
Launch Details
Launch Date
November 17, 2007
Launch Site
Launch Pad
LC200/39
Launch Vehicle
Proton-M/Briz-M
Orbital Elements
NORAD ID
32299
International Designator
2007-057A
Epoch
Sat, 04 Jul 2026 00:13:25 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
0.01°
Right Ascension
16.57°
Eccentricity
Calculating...
Argument of Perigee
89.96°
Period
1436.08 min
Mean Motion
1.00 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
ASTRA 4A
Alternative Name
Sirius 4
Type
Payload
Status
Operational
Owner
SESS
Country
Sweden
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 32299U 07057A 26185.00932565 .00000044 00000-0 00000-0 0 9994
2 32299 0.0106 16.5702 0002561 89.9612 183.6546 1.00272693 51812
Source: Celestrak
Summary
ASTRA 4A (also known as Sirius 4) is a communication satellite with the NORAD catalog ID of 32299 and object identifier 2007-057A. It was launched on November 17, 2007, from the TYMSC launch site using a Proton-M/Briz-M launch vehicle. The satellite is configured as A2100AXS, with dimensions of 5.5 meters in length and 2.2 meters in diameter, and spans 26 meters when fully deployed. It has a dry mass of 2000 kilograms and was launched with a total mass of 4385 kilograms. Equipped with 52 Ku-band transponders and 2 Ka-band transponders for communication purposes, it also features two deployable solar arrays and batteries for power generation. The satellite's manufacturer is LMCSS, and its owner is SESS. It has a designed lifetime of 15 years and uses the Leros motor for propulsion. Its shape is described as Box + 2 Pan, with an RCS (Reflective Cross Section) value of 20.
Physical Characteristics
Length
5.5
Diameter
2.2
Span
26
Dry Mass
2000
Launch Mass
4385
Shape
Box + 2 Pan
Radar Cross Section
20
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Sirius 4
Purpose
Communication
Mission
Communication
Manufacturer
LMCSS
Life Expectancy
15 years
Bus
A2100AX
Configuration
A2100AXS
Motor
Leros
Equipment
52 Ku-band transponders, 2 Ka-band transponders
Power System
2 deployable solar arrays, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
Map
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 13 Feb 2025
SpaceX and NASA swap Crew Dragon for Crew-10 mission; exciting 'space jellyfish' phenomena from recent launch.
Space Brief 17 Dec 2025
Today's stories cover Rocket Lab's innovative DiskSat launch, Digantara's expansion to missile defense, and DARPA's satellite surveillance network expansion, among other updates in military and satellite technology.
Space Brief 19 Aug 2025
Today's briefing covers Rocket Lab's strategic acquisition, Space Dynamics Lab's new collaboration with the Space Force, and shifts within the Pentagon's AI division.
X Report 19 Dec 2024
SpaceX secures FAA license for Starship Flight 7 and plans to establish Starbase as a city. Firefly and ispace are set to share a Falcon 9 launch. Plus, new Starlink services launch in New Zealand.
X Report 24 Feb 2025
SpaceX faces challenges with a Falcon 9 reentry issue, while continuing to expand its Starlink constellation with new launches.
Space Brief 5 Aug 2025
Today's Space Brief covers Lockheed Martin's pursuits in missile interception, key military advancements in space integration, the UK launch license for Skyrora, and much more.
X Report 19 Aug 2025
SpaceX receives FAA clearance for Starship Flight 10 and celebrates its 100th Falcon 9 launch of the year, successfully deploying 24 Starlink satellites.