SDA-1666

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Link to this page

https://orbinauts.com/satellites/65976

  • Communications satellite
  • Military
  • SDA_1666
  • NORAD 65976
  • 2025-230C
  • Low Earth orbit

Current orbit

Where SDA-1666 is on the world map, with the orbit it is flying
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Orbit began over the Atlantic Ocean

Orbit ends over the United States of America

Sunlit since

Enters the Earth’s shadow

Past trackNext orbits

In view from you

Nobody watches SDA-1666 go over, but a receiver still asks whether it is above the horizon. Say where you are and this card answers.

Your position is rounded to about a kilometre and sent only to the Orbinauts API, to find the pass.

No brightness has been published for SDA-1666, so it is not a naked-eye satellite and no city page carries pass times for it. Nothing here estimates one.

Seeing it

There is nothing to go outside for: it is too faint for the naked eye. What reaches you from it reaches a dish or an antenna, not an eye.

Timeline

  1. Launch

    Launched, on the day GCAT records. Source

Summary

Over Brazil LIVE

Where is SDA-1666?

At 5:36:29 PM UTC SDA-1666 was over Brazil (4.5° S, 52.8° W), 960 km up, moving at 7.37 km/s and in sunlight.

What is SDA-1666?

A communications satellite in low Earth orbit, in space since Oct 15, 2025.

Can I see SDA-1666?

No, not with the naked eye: no brightness has been published for SDA-1666, and nothing here estimates one; the dishes and receivers on the ground use its signals instead.

General

Operator
Space Development Agency
State
United States of America
Built by
Lockheed Martin Space Systems (Denver), Astronautics Operations
What it is
Communications satellite
Military
Yes: a defence organisation flies it
Launched
Mass
400 kg
Operating
Yes
Orbit class
Low Earth orbit

From GCAT, Jonathan McDowell’s general catalogue, licensed CC BY 4.0: the operator, the state, the manufacturer, what it is for, that a defence organisation flies it, the launch day, the mass, and whether it is operating. The orbit class is read from its current elements.

Latest orbital data

Position received
5:36 PM UTC
Station time (UTC)
5:36 PM UTC
Latitude / longitude
4.5° S, 52.8° W
Altitude
960 km
Speed
7.37 km/s (26,539 km/h)
Course
south
Light
In sunlight until 6:16 PM UTC
Inclination
81.3°
Orbital period
104.2 minutes
Orbits per day
13.82
This orbit
954 to 955 km
In shadow
30 minutes of each orbit
In view from
Within 2,350 km of the point below it
Elements epoch
Nov 7, 2026, 2:39 PM, 1 day old
Source
Position from Space-Track orbital elements of Nov 7, 2026, 2:39 PM, 1 day old.

No operator publishes an ephemeris for SDA-1666, so every position here comes from its orbital elements.

In orbit

Close approaches
No close approach to SDA-1666 has been reported publicly in the past thirty days.

From Space-Track’s public conjunction messages; the latest report was issued Nov 8, 2026, 1:11 PM, 3 hours old. Only approaches serious enough to be reported publicly are listed: within three days and, for two bodies near the Earth, closer than a kilometre with a chance of a collision above 1 in 10,000, the level at which NASA moves the ISS.

See every close approach reported in orbit.

Launched with

SDA-1666 shares its launch, 2025-230, with 20 other bodies the catalogue lists in orbit.

BodyWhat it is
SDA_1664Communications satellite
SDA_1665Communications satellite
SDA_1667Communications satellite
SDA_1668Communications satellite
SDA_1669Communications satellite
SDA_1670Communications satellite
SDA_1671Communications satellite
SDA_1672Communications satellite
SDA_1673Communications satellite
SDA_1674Communications satellite
SDA_1675Communications satellite
SDA_1676Communications satellite
SDA_1677Communications satellite
SDA_1678Communications satellite
SDA_1679Communications satellite
SDA_1680Communications satellite
SDA_1681Communications satellite
SDA_1682Communications satellite
SDA_1683Communications satellite
SDA_1684Communications satellite

Read from the international designators of the US catalogue: the year and the launch number every piece of one launch shares. A body that has come down is no longer listed.

Beside the others

SatelliteTypical altitudeOrbital periodMassIn space since
SDA-1666954 to 955 km104 minutes400 kg2025
BlueWalker 3443 to 453 km94 minutesabout 1.5 t2022
Hispasat 30W-635,786 to 35,786 km1,436 minutesabout 6.1 t2018
Amazonas Nexus35,786 to 35,786 km1,436 minutesabout 4.1 t2023
ARSAT-135,786 to 35,786 km1,436 minutesabout 3 t2014
Astra 1N35,786 to 35,786 km1,436 minutesabout 5.3 t2011

Data and API

The current elements from Space-Track as an OMM object, epoch Nov 7, 2026, 2:39 PM, 1 day old.

{
  "OBJECT_NAME": "SDA_1666",
  "OBJECT_ID": "2025-230C",
  "EPOCH": "2026-11-07T14:39:15.004512",
  "MEAN_MOTION": 13.81929129,
  "ECCENTRICITY": 0.0000789,
  "INCLINATION": 81.2991,
  "RA_OF_ASC_NODE": 79.5849,
  "ARG_OF_PERICENTER": 141.731,
  "MEAN_ANOMALY": 218.3902,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 65976,
  "ELEMENT_SET_NO": 999,
  "REV_AT_EPOCH": 5360,
  "BSTAR": 0.00010575949,
  "MEAN_MOTION_DOT": 0.00000125,
  "MEAN_MOTION_DDOT": 0
}