Starlink Constellation Size Nears 10,000, X Report 16 Mar 2026
Starlink constellation size in March 2026: 9,996 satellites in orbit and 9,986 working from 11,504 launched, as SpaceX deorbits legacy V1.0 hardware.
PIONEER VENUS PROBE 1 (12103)
COSPAR: N/A | Alt Name: Sounder Probe
DECAYED
Image
Additional Sources
Launch Details
Launch Date
August 8, 1978
Launch Site
Launch Pad
Unknown
Launch Vehicle
Unknown
Orbital Elements
NORAD ID
12103
International Designator
N/A
Decay Date
12/9/1978
Basic Satellite Info
Name
PIONEER VENUS PROBE 1
Alternative Name
Sounder Probe
Type
Payload
Status
Decayed
Owner
ARC
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Summary
The PIONEER VENUS PROBE 1, also known as Sounder Probe, is a US satellite launched on August 8, 1978, from AFETR (likely Air Force Eastern Test Range). Manufactured by HSES, this probe has the dimensions of 0.7 meters in length, diameter, and span, forming a spherical shape with a dry mass of 207 kilograms. It serves as part of the Large Probe payload owned by ARC (likely NASA Ames Research Center), but specific mission details are not provided.
Physical Characteristics
Length
0.7
Diameter
0.7
Span
0.7
Dry Mass
207
Launch Mass
207
Shape
Sphere
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Large Probe
Purpose
Unknown
Mission
Unknown
Manufacturer
HSES
Life Expectancy
Unknown
Bus
PV Large Probe
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
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