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IMPULSE-3 MIRA, 66687

Orbit data source: Space-Track

IMPULSE-3 MIRA, 66687 is an American payload satellite in SSO that was launched on Fri, 28 Nov 2025 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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Iframe URL

https://www.satcat.com/sats-embedded/66687?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66687, 2025-276X

Orbit

SSO

Country

Related business

None

Manufacturer

Unknown

Mission

Operational Civil Communications

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

2025-11-28 (4 months ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 0.1 m

Radar Cross Section

0.035 m²

Expand to show TLE details & history
Last TLE update: 18 hours ago

TLE from 18 hours ago

0 IMPULSE-3 MIRA
1 66687U 25276X   26092.15744274  .00013049  00000-0  61615-3 0  9997
2 66687  97.4287 166.9706 0007778  71.6401 288.5679 15.19535692 18870

Epoch: 2026-04-02T03:46Z

TLE epoch observation values (Epoch: 2026-04-02T03:46:43.052Z)

Latitude

-0.00006°

Longitude

-80.21873°

Altitude

508.63 km

Speed

7.611 km/s

True Right ascension

11h 07m 52s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

03:05:29

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

509.563 km

Perigee altitude

498.857 km

Semi-major axis

6,882.347 km

Eccentricity

0.00078

Inclination

97.4287°

RAAN

166.9706°

Arg. of periapsis

71.6401°

True anomaly

288.48338°

Mean anomaly

288.5679°

Eccentric anomaly

288.52564°

Mean motion

3.80135 °/min

Orbital period

94.7 mins

BSTAR

0.00061615

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Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

PELICAN-6 300D, 66703

FLOCK 4H 12, 66715

FLOCK 4H 33, 66736

FLOCK 4H 23, 66726

LEMUR-2-DEANANDMAEVE, 66678

LEMUR-2-HOTSPUR-TOM, 66786

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IMPULSE-3 MIRA Visibility forecast

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Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
6 mins	2026-04-03 05:11:02.479Z	179.862° S	2026-04-03 05:14:02.479Z	232.487° WSW	39.671°	2026-04-03 05:17:02.479Z	336.531° NNW
5 mins	2026-04-03 18:17:02.479Z	340.593° N	2026-04-03 18:19:02.479Z	280.036° WNW	31.252°	2026-04-03 18:22:02.479Z	220.136° SW

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out IMPULSE-3 MIRA, 66687 on other resources

View IMPULSE-3 MIRA, 66687 on NASA - NSSDCA Website

View IMPULSE-3 MIRA, 66687 on Heavens-Above

View IMPULSE-3 MIRA, 66687 on Keep Track

View IMPULSE-3 MIRA, 66687 on Celestrak

View IMPULSE-3 MIRA, 66687 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

IMPULSE-3 MIRA, 66687

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 18 hours ago

TLE from 18 hours ago

TLE epoch observation values (Epoch: 2026-04-02T03:46:43.052Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

IMPULSE-3 MIRA Visibility forecast

Co-orbital & Co-planar RSOs

Check out IMPULSE-3 MIRA, 66687 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 18 hours ago