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CALSPHERE 1, 900

Orbit data source: Space-Track

CALSPHERE 1, 900 is a payload satellite in LEO that was launched on Tue, 06 Oct 1964 UTC via a THOR ABLESTAR 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 embed code

<iframe src="https://www.satcat.com/sats-embedded/900?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/900?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

900, 1964-063C

Orbit

LEO

Last TLE update

18 hours ago

Origin

United States Navy (US)

Manufacturer

NRL

Mission

Operational Defense Calibration

Bus & Motor

NRL 14", Unknown motor

Mass

1 kg wet, 1 kg dry

Launch date (UTC)

1964-10-06 (61 years ago)

Launch vehicle

THOR ABLESTAR

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Sphere, 0.36 m

Radar Cross Section

0.102 m², Small (<0.1 m²)

Expand to show TLE details & history

TLE from 18 hours ago

0 CALSPHERE 1
1 00900U 64063C   25138.75695194  .00000820  00000-0  83223-3 0  9994
2 00900  90.2168  62.7226 0028088  48.5059 343.3084 13.76046257 17171

Epoch: 2025-05-18T18:10Z

TLE epoch observation values (Epoch: 2025-05-18T18:10:00.647Z)

Latitude

31.77658°

Longitude

-86.59304°

Altitude

962.298 km

Speed

7.383 km/s

True Right ascension

04h 10m 21s

True Declination

31° 37' 38"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

31.03745°

Longitude

93.6875°

Altitude

986.471 km

Speed

7.359 km/s

Apparent Right ascension

13h 15m 12s

Apparent Declination

-2° 29' 59"

Sunlit

Object is in full shadow

Visualization observer readout

Local Sidereal Time

21:00:19

Azimuth

285.617° WNW

Elevation

-21.547°

Doppler factor

Orbital elements

Apogee altitude

995.609 km

Perigee altitude

954.302 km

Semi-major axis

7,353.093 km

Eccentricity

0.00281

Inclination

90.2168°

RAAN

62.7226°

Arg. of periapsis

48.5059°

True anomaly

Unknown

Mean anomaly

343.3084°

Eccentric anomaly

Unknown

Mean motion

3.44222 °/min

Orbital period

104.58 mins

BSTAR

0.00083223

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Other satellites on launch #63 in the year 1964 (1964-10-06 UTC)

THOR ABLESTAR R/B, 893

OPS 5798 (TRANSIT 5B-4), 897

OPS 5798 DEB, 901

CALSPHERE 2, 902

OPS 5798 DEB, 903

CALSPHERE 1 Visibility forecast

Observer location: undefined°, undefined°

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.
11 mins	2025-05-19 18:33:07.422Z	147.376° SSE	2025-05-19 18:38:07.422Z	91.872° ESE	33.027°	2025-05-19 18:44:07.422Z	12.459° NNE
9 mins	2025-05-19 20:19:07.422Z	226.668° WSW	2025-05-19 20:23:07.422Z	276.341° WNW	24.622°	2025-05-19 20:28:07.422Z	333.279° NNW
10 mins	2025-05-20 07:16:07.422Z	2.188° NNE	2025-05-20 07:20:07.422Z	350.298° N	44.849°	2025-05-20 07:26:07.422Z	184.936° SSW

Authenticating...

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Check out CALSPHERE 1, 900 on other resources

View CALSPHERE 1, 900 on NASA - NSSDCA Website

View CALSPHERE 1, 900 on Heavens-Above

View CALSPHERE 1, 900 on Keep Track

View CALSPHERE 1, 900 on Celestrak

View CALSPHERE 1, 900 on Gunter's Space Page

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