▸Orbital parameters

Orbit class	LEO
Inclination	89.8991°
Eccentricity	0.0071828
Period	107.8 min
Apogee	1,177 km
Perigee	1,069 km
Mean motion	13.36282059 rev/day
RAAN	122.2916°
Arg of perigee	48.2354°
Mean anomaly	17.5781°
B*	1.7281e-4
Rev at epoch	96,537

▸Two-line element set (TLE)

EPOCH Jul 7, 2026SOURCE CelesTrakDERIVED currentUPDATED Jul 7, 2026

1 01520U 65065H 26188.14320873 .00000100 00000-0 17281-3 0 9996

2 01520 89.8991 122.2916 0071828 48.2354 17.5781 13.36282059965377

▸ source OMM (JSON)

{
  "OBJECT_NAME": "CALSPHERE 4A",
  "OBJECT_ID": "1965-065H",
  "EPOCH": "2026-07-07T03:26:13.234+00:00",
  "MEAN_MOTION": 13.36282059,
  "ECCENTRICITY": 0.0071828,
  "INCLINATION": 89.8991,
  "RA_OF_ASC_NODE": 122.2916,
  "ARG_OF_PERICENTER": 48.2354,
  "MEAN_ANOMALY": 17.5781,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 1520,
  "REV_AT_EPOCH": 96537,
  "BSTAR": 0.00017281,
  "MEAN_MOTION_DOT": 0.000001,
  "MEAN_MOTION_DDOT": 0
}

Reconstructed from CelesTrak OMM mean-elements (element-set number is a placeholder). TLE/OMM data is approximate. Not for operational use or collision avoidance.

▸Satellite metadata

Name	CALSPHERE 4A
Operator	Naval Research LabHIGHvia GCAT — Jonathan McDowell's General Catalog
Country	United States
Launch date	Aug 13, 1965HIGHvia GCAT — Jonathan McDowell's General Catalog
Launch mass (kg)	4HIGHvia GCAT — Jonathan McDowell's General Catalog
Mission purpose	—
Object class	PAYLOADHIGH

▸Data quality

Score85 / 100

Claims7

Sources1

TLEavailable

▸Sources

GCAT — Jonathan McDowell's General CatalogCC BY 4.0planet4589.org

▸Actions

GET /api/v1/satellites/1520

//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.