Program

MV

Payloads

2

In orbit

1

Operational (CelesTrak)

0

Re-entered

1

First launch

1961-02-04

Latest launch

1961-02-12

From GCAT by Jonathan McDowell (CC BY 4.0). Roles are counted from the catalogue itself, not from GCAT type labels, which GCAT describes as patchy. About this source