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CALSPHERE 1, 900

Orbit data source: Space-Track

CALSPHERE 1, 900 is a payload satellite owned by NRL (US) 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

2 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 2 hours ago

0 CALSPHERE 1
1   900U 64063C   25129.24916755  .00000855  00000-0  86855-3 0  9999
2   900  90.2165  62.5055 0028246  74.5247  46.9373 13.76031381 15852

Epoch: 2025-05-09T05:58Z

Definitive object data (Epoch: 2025-05-09T05:58:48.076Z)

Latitude

58.39336°

Longitude

-74.15284°

Altitude

973.786 km

Speed

7.377 km/s

True Right ascension

16h 11m 25s

True Declination

58° 14' 39"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

83.06487°

Longitude

103.72771°

Altitude

971.144 km

Speed

7.383 km/s

Apparent Right ascension

03h 44m 39s

Apparent Declination

28° 58' 19"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

15:41:20

Azimuth

359.222° N

Elevation

-21.108°

Doppler factor

Orbital elements

Apogee altitude

995.778 km

Perigee altitude

954.239 km

Semi-major axis

7,353.146 km

Eccentricity

0.0028246

Inclination

90.2165°

RAAN

62.5055°

Arg. of periapsis

74.5247°

True anomaly

47.17435°

Mean anomaly

46.9373°

Eccentric anomaly

47.05577°

Mean motion

3.44218 °/min

BSTAR

0.00086855

Orbital period

104.58 mins

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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	2025-05-09 07:43:19.451Z	7.469° NNE	2025-05-09 07:49:19.451Z	123.699° SE	42.994°	2025-05-09 07:54:19.451Z	174.988° S
5 mins	2025-05-09 09:30:19.451Z	313.278° NW	2025-05-09 09:32:19.451Z	291.623° WNW	15.591°	2025-05-09 09:35:19.451Z	259.434° W
10 mins	2025-05-09 19:28:19.451Z	155.428° SSE	2025-05-09 19:33:19.451Z	68.314° E	39.47°	2025-05-09 19:38:19.451Z	7.593° NNE
6 mins	2025-05-09 21:15:19.451Z	249.703° W	2025-05-09 21:17:19.451Z	273.485° WNW	18.863°	2025-05-09 21:21:19.451Z	319.451° NNW
6 mins	2025-05-10 06:27:19.451Z	51.612° ENE	2025-05-10 06:29:19.451Z	73.57° E	16.369°	2025-05-10 06:33:19.451Z	116.081° SE

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.