Tracking 22842 objects as of 15-Apr-2021
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LISA PATHFINDER is classified as:

NORAD ID: 41043
Int'l Code: 2015-070A
Perigee: 221.6 km
Apogee: 1,465.1 km
Inclination: 6.0 °
Period: 101.6 minutes
Semi major axis: 7214 km
RCS: Unknown
Launch date: December 3, 2015
Source: European Space Agency (ESA)

LISA PATHFINDER is a satellite designed to test the technologies, some of which had to be invented and refined for the mission, required for a future project to deploy two or three satellites to measure gravitational waves, a detection that would give astronomers a new way to study the universe. It took 10 years to build this project, and cost more than $630 million, a price divided between the European Space Agency, European governments and NASA. LISA Pathfinder, which weighed about 4,200 pounds (1.9 metric tons) at liftoff, tows along a propulsion module to give it a boost toward the L1 Lagrange point, a gravitationally stable position nearly a million miles - 1.5 million kilometers - from Earth in the direction of the sun.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 41043U 15070A   15348.92381764  .00128484  00000-0  53174-3 0  9996
2 41043   5.9720 289.5989 0861767 219.4128 134.0036 14.16792656  1655
Source of the keplerian elements: AFSPC