ARCSTONE

LIVE
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Link to this page

https://orbinauts.com/satellites/64540

  • Space telescope
  • NORAD 64540
  • 2025-135N
  • Low Earth orbit

Current orbit

Where ARCSTONE is on the world map, with the orbit it is flying
View on live map

Orbit began over the Sea of Okhotsk

Orbit ends over the People's Republic of China

In the Earth’s shadow since

Back in sunlight

Past trackNext orbits

In view from you

Nobody watches ARCSTONE 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 ARCSTONE, 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 far too faint for the naked eye, and catching it would take a telescope driven to follow a point crossing the sky in minutes. What is worth looking at is what it sends back.

Timeline

  1. Launch

    Launched, on the day GCAT records. Source

Summary

Over the Philippine Sea LIVE

Where is ARCSTONE?

At 4:41:19 PM UTC ARCSTONE was over the Philippine Sea (10.9° N, 132.4° E), 454 km up, moving at 7.64 km/s and in the Earth’s shadow.

What is ARCSTONE?

A space telescope in low Earth orbit, in space since Jun 23, 2025.

Can I see ARCSTONE?

No, not with the naked eye: no brightness has been published for ARCSTONE, and nothing here estimates one; what people use is what it sees, which its operator publishes.

General

Operator
NASA Langley Research Center
State
United States of America
Built by
Blue Canyon Technologies
What it is
Space telescope
Launched
Mass
5 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, the launch day, the mass, and whether it is operating. The orbit class is read from its current elements.

Latest orbital data

Position received
4:41 PM UTC
Station time (UTC)
4:41 PM UTC
Latitude / longitude
10.9° N, 132.4° E
Altitude
454 km
Speed
7.64 km/s (27,511 km/h)
Course
north
Light
In the Earth’s shadow until 5:01 PM UTC
Inclination
97.5°
Orbital period
93.6 minutes
Orbits per day
15.38
This orbit
448 to 452 km
In shadow
35 minutes of each orbit
In view from
Within 1,460 km of the point below it
Elements epoch
Nov 7, 2026, 2:05 PM, 1 day old
Source
Position from Space-Track orbital elements of Nov 7, 2026, 2:05 PM, 1 day old.

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

In orbit

Close approaches
No close approach to ARCSTONE 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

ARCSTONE shares its launch, 2025-135, with 66 other bodies the catalogue lists in orbit.

BodyWhat it is
GOOD ANCESTOR KILAKILACommunications satellite
GHGSAT-C12Earth-watching satellite
DUTHSAT-2Satellite
OBJECT DEarth-watching satellite
OBJECT ESatellite
TPA-1Satellite
CONNECTA IOT-9Communications satellite
UND ROADS 1Satellite
FOSSASAT2E21Communications satellite
OTTER PUP 2Satellite
IOD2_STARTICALCommunications satellite
ELARA 1Earth-watching satellite
PULSAR-0Navigation satellite
USPWSA-DRAGOONCommunications satellite
SKYBEE-A02Earth-watching satellite
ION SCV-020Satellite
FORGESTAR-1Satellite
OBJECT VEarth-watching satellite
GHGSAT-C13Earth-watching satellite
UND ROADS 2Satellite
BRO-18Satellite
SATMARCommunications satellite
HYPERFIELD-1BEarth-watching satellite
CONNECTA IOT-12Communications satellite
OBJECT ACEarth-watching satellite
CONNECTA IOT-10Communications satellite
OBJECT AEEarth-watching satellite
CONNECTA IOT-11Communications satellite
QUICK3Satellite
PADRESpace telescope
OBJECT AJCommunications satellite
LEMUR 2 KRISHCommunications satellite
HUBBLE 6Communications satellite
AE3VACommunications satellite
TIME FLIESNavigation satellite
LEMUR 2 HUBBLE-4Communications satellite
ARVAKER-3Satellite
ARVAKER-2Satellite
IRIDE-MS2-HEO-3Earth-watching satellite
IRIDE-MS2-HEO-2Earth-watching satellite
ICEYE-X54Earth-watching satellite
IRIDE-MS2-HEO-5Earth-watching satellite
ICEYE-X52Earth-watching satellite
MUSAT3Earth-watching satellite
ICEYE-X56Earth-watching satellite
ION SCV-018Satellite
IRIDE-MS2-HEO-6Earth-watching satellite
LYRA-3Communications satellite
ICEYE-X57Earth-watching satellite
GRUS-3ALPHAEarth-watching satellite
YAM-10Satellite
ICEYE-X55Earth-watching satellite
IRIDE-MS2-HEO-4Earth-watching satellite
CAPELLA-17 (ACADIA)Earth-watching satellite
ICEYE-X53Earth-watching satellite
IRIDE-MS2-HEO-9Earth-watching satellite
LEMUR 2 SEJONG-2Earth-watching satellite
IRIDE-MS2-HEO-8Earth-watching satellite
BIFROST-DNKEarth-watching satellite
SATORO-T3Satellite
OBJECT BQSatellite
AE2AEarth-watching satellite
HUBBLE 7Communications satellite
LEMUR 2 HUBBLE-5Communications satellite
LEMUR 2 KARENDARRELLCommunications satellite
LEMUR-2-LUCILLE-ROSECommunications 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
ARCSTONE448 to 452 km94 minutes5 kg2025
Hubble465 to 480 km94 minutesabout 12.2 t1990
Fermi488 to 498 km94 minutesabout 4.3 t2008
Cheops679 to 694 km98 minutes280 kg2019
XMM-Newton29,443 to 91,682 km2,873 minutesabout 3.8 t1999
Chandra12,186 to 136,630 km3,809 minutesabout 4.8 t1999

Data and API

The current elements from Space-Track as an OMM object, epoch Nov 7, 2026, 2:05 PM, 1 day old.

{
  "OBJECT_NAME": "ARCSTONE",
  "OBJECT_ID": "2025-135N",
  "EPOCH": "2026-11-07T14:05:26.650464",
  "MEAN_MOTION": 15.3765211,
  "ECCENTRICITY": 0.00026352,
  "INCLINATION": 97.4744,
  "RA_OF_ASC_NODE": 70.924,
  "ARG_OF_PERICENTER": 50.202,
  "MEAN_ANOMALY": 309.9456,
  "EPHEMERIS_TYPE": 0,
  "CLASSIFICATION_TYPE": "U",
  "NORAD_CAT_ID": 64540,
  "ELEMENT_SET_NO": 999,
  "REV_AT_EPOCH": 7703,
  "BSTAR": 0.00082828328,
  "MEAN_MOTION_DOT": 0.0003062,
  "MEAN_MOTION_DDOT": 0
}