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CALSPHERE 2, 902

Orbit data source: Space-Track

CALSPHERE 2, 902 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 src="https://www.satcat.com/sats-embedded/902?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/902?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

902, 1964-063E

Orbit

LEO

Last TLE update

6 hours ago

Origin

United States Navy (US)

Manufacturer

NRL

Mission

Operational Defense Calibration

Bus & Motor

NRL 14", Unknown motor

Mass

10 kg wet, 10 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 6 hours ago

0 CALSPHERE 2
1 00902U 64063E   25195.62405199  .00000040  00000-0  46980-4 0  9993
2 00902  90.2292  67.8821 0020131 123.8044 295.8250 13.52866757810626

Epoch: 2025-07-14T14:58Z

TLE epoch observation values (Epoch: 2025-07-14T14:58:38.091Z)

Latitude

59.51135°

Longitude

-89.89415°

Altitude

1,065.411 km

Speed

7.328 km/s

True Right ascension

04h 29m 58s

True Declination

59° 22' 01"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

50.73962°

Longitude

90.7776°

Altitude

1,055.035 km

Speed

7.336 km/s

Apparent Right ascension

18h 54m 29s

Apparent Declination

11° 52' 14"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

09:10:08

Azimuth

38.811° NE

Elevation

-29.399°

Doppler factor

Orbital elements

Apogee altitude

1,073.747 km

Perigee altitude

1,043.804 km

Semi-major axis

7,436.912 km

Eccentricity

0.00201

Inclination

90.2292°

RAAN

67.8821°

Arg. of periapsis

123.8044°

True anomaly

Unknown

Mean anomaly

295.825°

Eccentric anomaly

Unknown

Mean motion

3.38419 °/min

Orbital period

106.38 mins

BSTAR

0.00004698

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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

CALSPHERE 1, 900

OPS 5798 DEB, 901

OPS 5798 DEB, 903

CALSPHERE 2 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.
12 mins	2025-07-15 03:41:46.057Z	6.379° NNE	2025-07-15 03:47:46.057Z	74.389° E	43.802°	2025-07-15 03:53:46.057Z	176.133° S
6 mins	2025-07-15 05:30:46.057Z	316.325° NNW	2025-07-15 05:33:46.057Z	285.111° WNW	16.195°	2025-07-15 05:36:46.057Z	255.802° W
12 mins	2025-07-15 15:37:46.057Z	167.49° S	2025-07-15 15:43:46.057Z	101.679° ESE	43.717°	2025-07-15 15:49:46.057Z	2.148° NNE
6 mins	2025-07-15 17:28:46.057Z	260.301° W	2025-07-15 17:30:46.057Z	281.296° WNW	16.162°	2025-07-15 17:34:46.057Z	319.783° NNW

Authenticating...

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Check out CALSPHERE 2, 902 on other resources

View CALSPHERE 2, 902 on NASA - NSSDCA Website

View CALSPHERE 2, 902 on Heavens-Above

View CALSPHERE 2, 902 on Keep Track

View CALSPHERE 2, 902 on Celestrak

View CALSPHERE 2, 902 on Gunter's Space Page

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