Key statistics
Satellite ATLAS H R/B at a glance.
Uptime
13933
Days in orbit
Revolutions
≈ 13.5
Per day
Orbit
LEO
Low Earth Orbit
Inclination
63.3
Latest
Satellite identification and parameters
Extended collection of information and parameters for ATLAS H R/B.
Object identification
Identified? True
Debris? False
Object name: ATLAS H R/B
International designator: 1987-043B
Object number (NORAD): 17998
Object ID (CCSDS): 17998
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 106.648 minutes
Inclination: 63.3176 deg
SMA: 7449.527 km
Apoapsis: 1609.205 km
Periapsis: 533.579 km
RAAN: 59.103 deg
Eccentricy: 0.0721943
Argument of periapsis: 112.6931 deg
Mean anomaly: 255.2039 deg
Mean motion: 13.50236116 rev/day
Mean motion (dot): 0.00002473 rev/day2
B* drag term: 0.00075247 1/REarth
Two-line elements (TLE)
Creation date: July 6, 2025, 10:36 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 6, 2025, 9:24 p.m. UTC
TLE line 0: 0 ATLAS H R/B
TLE line 1: 1 17998U 87043B 25187.89221664 .00002473 00000-0 75247-3 0 9991
TLE line 2: 2 17998 63.3176 59.1030 0721943 112.6931 255.2039 13.50236116304684
Live tracking on map
Real-time ground track for satellite ATLAS H R/B.
In-orbit conjunctions
A list of the most updated potential collisions computed for object ATLAS H R/B.
Associated space launch
The Parcae satellites were passive ELINT satellites. MSD satellites were dispensers of triplets of ocean surveillance satellites.
ATLAS H R/B was lifted into orbit during the mission ‘Atlas H | Parcae 9A,B,C & MSD 9’, on board a Atlas H space rocket.
The launch took place on May 15, 1987, 3:45 p.m. from Space Launch Complex 3E.
For more information about the launch, click the button.
Atlas H | Parcae 9A,B,C & MSD 9
Agency: N/A
Status: Launch Successful
Launch date: May 15, 1987, 3:45 p.m. UTC
Rocket: Atlas H
Launch pad: Space Launch Complex 3E
Location: Vandenberg SFB, CA, USA
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