SBIRS

NORAD 41937 · COSPAR 2017-004A · ACTIVE

Orbit: #3604 @ 35780 x 35794 km x 2.5291 deg

CURRENT ORBIT DATA

TLE epoch 2026-11-08 07:26 UTC Â· 11.5 h old

Orbit history

// altitude & velocity from orbital-data archive

Trend: —

Altitude —

Velocity —

Next visible passes

// click to check

Current TLE

// onowactive

SBIRS GEO-4 (USA 273)
1 41937U 17004A 26312.30997148 -.00000160 00000-0 00000-0 0 09999
2 41937 2.5291 46.4435 0001638 181.8705 269.5990 1.00271818036040

TLE data & history 🚀 Launch manifest

Spacecraft info

// UCS Satellite Database

Launch date

January 20th 2017

Spacecraft age

9 years, 9 months

Distance travelled

—

Expected lifetime

—

Operator

US Air Force

Purpose

Earth Observation

Orbit class

GEO

Launch site

Cape Canaveral

Launch vehicle

Atlas 5

Contractor

Lockheed Martin Space Systems

Launch mass

4,500 kg

Power

Orbit elements

// from current orbital elements

Inclination

2.5291Â°

Period

1436.1 min

Perigee

35780 km

Apogee

35794 km

Eccentricity

0.0001638

RAAN

46.4435Â°

Arg of Perigee

181.8705Â°

Mean Motion

1.00271818 rev/d