Silentbarker

Silentbarker is a class of classified United States spy satellites for space domain awareness developed by US Space Force and National Reconnaissance Office.^[1]^[2]^[3]

In December 2025, USSF System Delta 89 announced that it was seeking a new satellite to replace the Silentbarker series.^[4] The USSF has also said it intends not to partner with the National Reconnaissance Office (NRO) for the replacement.^[5]

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[2]

[3]

[4]

[5]

Name	Launch date	Launcher	COSPAR ID	Notes
Silentbarker 1, USA-346	10 September 2023	Atlas V	2023-140A	NROL-107
Silentbarker 2, USA-347	10 September 2023	Atlas V	2023-140B	NROL-107
Silentbarker 3, USA-348	10 September 2023	Atlas V	2023-140C	NROL-107

v t e National Reconnaissance Office
Current programs	Sentient (intelligence analysis system) (2009-unknown) SpaceX Starshield (2022-present) Silentbarker (2023-) Blackjack (2024-) Future Ground Architecture
Facilities & commands	Headquarters, Chantilly, VA National Reconnaissance Operations Center (NROC) RAF Menwith Hill Pine Gap Casa Grande Photogrammetric Test Range 222d Command and Control Squadron Aerospace Data Facilities Colorado, Buckley Space Force Base East, Virginia, Fort Belvoir Southwest, New Mexico, White Sands Missile Range
Technology & Science	Byeman Control System Dijkstra's algorithm Phased array radar Synthetic-aperture radar Tip and cue
Satellite lines & projects	Key Hole (1959-unknown) Discoverer 1 (1959) Corona (1959-1972) Samos (1960-1962) KH-5 Argon (1961-1964) Upward (1961-1972) Poppy (1962-1967) Samos-F (1962-1971) Defense Meteorological Satellite Program (1962-2014) Lanyard (1963) Zirconic (1963-) Gambit (1963-1967) Quill (1964) Gambit 3 (1966-1984) Canyon (1968-1977) Aquacade (1970-1978) Jumpseat (1971-1983) Hexagon (1971-1986) KENNEN (1976-unknown) Satellite Data System (1976-2017) Naval Ocean Surveillance System (1976-2025) Vortex (1978-1989) Magnum (1985-1989) Lacrosse (1988-2005) Prowler (1990) Misty (1990-2012) Trumpet (1994-1997) Mercury (1994-1998) SLDCOM (1994-unknown) Orion (1995-) FORTE (1997) Discoverer II (1998-2000) STEX (1998) Enhanced Imaging System (1999) Future Imagery Architecture (1999-2018) Zuma (2018)
People	Christopher Scolese (Director) Betty J. Sapp Brian Patrick Regan William Kampiles Leadership of the National Reconnaissance Office
History	Chronology of the National Reconnaissance Office List of NRO launches USA-193 USA-225 USA-234 USA-276 2012 National Reconnaissance Office space telescope donation to NASA Multiple Mirror Telescope 6594th Test Group
Past programs	Manned Orbiting Laboratory NEMESIS (High Altitude) RAVEN (High Altitude) SIGINT High Altitude Replenishment Program (SHARP)
Founders	William O. Baker Merton E. Davies Sidney Drell Richard L. Garwin Amrom Harry Katz James R. Killian Edwin H. Land Frank W. Lehan William J. Perry Edward M. Purcell

v t e USAF and USSF space vehicle designations (since 1962)
SLV series	SLV-1 (Scout) SLV-2 (Thor) SLV-3 (Atlas) SLV-4 (Titan II) SLV-5 (Titan)
SB series	SB-1 SB-2 SB-3 SB-4 SB-5 SB-6 SSB-7 SSB-8 SSB-9 SSB-10 ASB-11
Satellites	WS-1 WS-2 LS-3 ES-4 ES-5 LS-6 NS-7 ES-8 LS-9 LS-10 (I) XSS-10 (II) XSS-11² XSS-12 S-13¹ ES-14 LS-15³ LS-16³ ES-17 EWS-G1 EWS-G2
¹ Not assigned ² Unofficial designation ³ Designation believed to be this type but unconfirmed

v t e ← 2022 Orbital launches in 2023 2024 →
January	ION SCV-007 & 008 (Astrocast × 4), Orbiter SN1† (Unicorn-2G†, Unicorn-2H†), Vigoride-5, ICEYE × 3, Lynk Tower 03, Lynk Tower 04, ÑuSat × 4, Flock 4y × 36, KSF3 × 4, Gama Alpha, Lemur-2 × 6, Milspace-2 1, MilSpace-2 2, Platform 2, SpaceBEE × 12, Shijian 23 Ceres 1 (Nantong Zhongxue, Tianqi 13, Tianmu-1 01 & 02, Xiamen SciTech 1) AMAN†, CIRCE 1†, CIRCE 2†, ForgeStar-0†, Prometheus 2A†, Prometheus 2B†, STORK-6† OneWeb L16 (40 satellites) RS1 (Varisat 1A, Varisat 1B)† Apstar 6E Yaogan 37, Shiyan 22A, Shiyan 22B Jilin-1 Gaofen-03D 34, Jilin-1 Hongwai-01A × 2, Jilin-1 Mofang-02A × 3 LDPE-3A, USA-342 / CBAS-2 USA-343 / GPS III-06 Starlink G2-4 (51 satellites) Hawk × 3 IGS-Radar 7 Starlink G5-2 (56 satellites) Starlink G2-6 (49 satellites), ION SCV-009
February	Starlink G5-3 (53 satellites) Elektro-L №4 Amazonas Nexus Progress MS-22 EOS-07 Starlink G5-4 (55 satellites) Starlink G2-5 (51 satellites) Inmarsat-6 F2 ChinaSat 26 Soyuz MS-23 Horus 1 Starlink G6-1 (21 satellites)
March	SpaceX Crew-6 Starlink G2-7 (51 satellites) Nahid-1† ALOS-3† OneWeb L17 (40 satellites) Tianhui-6 A/B Olymp-K №2 / Luch-5X Horus 1 SpaceX CRS-27 Shiyan 19 Capella 9, Capella 10 Gaofen 13-02 Starlink G2-8 (52 satellites) SES-18, SES-19 Kuaizhou 1A (Tianmu-1 03-06) Terran 1† Kosmos 2567 / Bars-M 4L BlackSky 18, BlackSky 19 Starlink G5-5 (56 satellites) OneWeb L18 (36 satellites) Ofeq-13 Kosmos 2568 / EO MKA №4 Starlink G5-10 (56 satellites) PIESAT-1A 01, PIESAT-1B × 3 Yaogan 34-04
April	Tianlong-2 (Aitaikong) SDA Transport Layer Tranche 0 × 8, SDA Tracking Layer Tranche 0 × 2 Hyperbola-1 Intelsat 40e / TEMPO JUICE ION SCV-010 (Kepler-20, Kepler-21), Vigoride-6, Hawk × 3, İMECE, ÑuSat × 4, Brokkr-1, DEWA SAT-2, LacunaSat-2F, Lemur-2 × 3, Sateliot_0 / Platform 3, TAIFA-1 Fengyun 3G Starlink G6-2 (21 satellites) Starship flight test 1† TeLEOS-2 Starlink G3-5 (46 satellites) O3b mPOWER 3, O3b mPOWER 4
May	ViaSat-3 Americas Starlink G5-6 (56 satellites) TROPICS 05, TROPICS 06 Tianzhou 6 Starlink G2-9 (51 satellites) Starlink G5-9 (56 satellites) BeiDou-3 G4 Starlink G6-3 (22 satellites) Iridium 9 (5 satellites), OneWeb L19 (15 satellites), JoeySat MUST-1A/B Axiom Mission 2 Progress MS-23 NEXTSat-2 TROPICS 03, TROPICS 07 Kondor-FKA №1 Arabsat 7B (BADR-8) NVS-01 Shenzhou 16 Malligyong-1 #1† Starlink G2-10 (52 satellites)
June	Starlink G6-4 (22 satellites) SpaceX CRS-28 (Maya-5, Maya-6) Shiyan 24A, Shiyan 24B Longjiang 3 Starlink G5-11 (52 satellites) ION SCV-011 (Unicorn-2I), Orbiter SN3, Blackjack Aces × 4, ICEYE × 4, ÑuSat × 4, GEISAT, Lemur-2 × 3, MISR-A, MISR-B, SpaceBEE × 12, Tiger-4, XVI Jilin-1 Gaofen-03D × 8, Jilin-1 Gaofen-06A × 30, Jilin-1 Pingtai-02A × 2 SATRIA Shiyan 25 Starlink G5-7 (47 satellites) USA-345 / Orion 11 Starlink G5-12 (56 satellites) Meteor-M №2-3
July	Euclid Syracuse 4B, Heinrich Hertz Starlink G5-13 (48 satellites) SatNet test satellites × 2 Starlink G6-5 (22 satellites) Zhuque-2 Chandrayaan-3 (Vikram, Pragyan) Starlink G5-15 (54 satellites) Lemur-2 × 2 Kuaizhou 1A (Tianmu-1 07-10) Starlink G6-15 (15 satellites) Ceres 1 (Qiankun-1, Xingshidai‐16) Long March 2D (Skysight AS-01/AS-02/AS-03, Lingxi-03) Starlink G6-6 (22 satellites) Yaogan 36-05 (3 satellites) Starlink G6-7 (22 satellites) Jupiter-3 / EchoStar-24 DS-SAR
August	Cygnus NG-19 Fengyun 3F Galaxy-37 Starlink G6-8 (22 satellites) Kosmos 2569 / GLONASS-K2 13L Starlink G6-20 (15 satellites) S-SAR 02 / Huanjing-2F Ceres 1 (GeoSat Intelligent Emergency-1, Star Pool-1B, Xiguang-1-01, Xi’an Hangtou 88/96/104/112) Luna 25 Starlink G6-9 (22 satellites) LTDC-4A Kuaizhou 1A (HEAD-3A/B/C/D/E) Starlink G6-10 (22 satellites) Gaofen 12-04 Starlink G7-1 (21 satellites) Progress MS-24 Malligyong-1 F2† Acadia 1 Jilin-1 Kuanfu-02A SpaceX Crew-7 Starlink G6-11 (22 satellites) Yaogan 39-01 (3 satellites)
September	Starlink G6-13 (22 satellites) Aditya-L1 SDA Transport Layer Tranche 0 × 11, SDA Tracking Layer Tranche 0 × 2 Starlink G6-12 (21 satellites) Ceres 1 (Tianqi 21-24) Yaogan 33-03 XRISM, SLIM (LEV-1, LEV-2) Starlink G6-14 (22 satellites) Yaogan 40 (3 satellites) USA-346 / Silentbarker 1, USA-347 / Silentbarker 2, USA-348 / Silentbarker 3 Starlink G7-2 (21 satellites) TacRS-3 Soyuz MS-24 Starlink G6-16 (22 satellites) Yaogan 39-02 (3 satellites) Acadia 2† Starlink G6-17 (22 satellites) Jilin-1 Gaofen-04B† Starlink G6-18 (22 satellites) Starlink G7-3 (21 satellites) Yaogan 33-04 Noor-3 Starlink G6-19 (22 satellites)
October	Yaogan 39-03 (3 satellites) Starlink G6-21 (22 satellites) KuiperSat-1, KuiperSat-2 THEOS-2, MACSAT, TRITON Starlink G7-4 (21 satellites) Psyche Starlink G6-22 (22 satellites) Yunhai-1-04 Starlink G6-23 (22 satellites) Starlink G7-5 (21 satellites) Starlink G6-24 (23 satellites) Yaogan 39-04 (3 satellites) Shenzhou 17 Kosmos 2570 / Lotos-S1 №7 (Kosmos 2571) Starlink G7-6 (22 satellites) Starlink G6-25 (23 satellites)
November	TJS-10 Starlink G6-26 (23 satellites) Starlink G6-27 (23 satellites) ChinaSat 6E SpaceX CRS-29 ION SCV-015 (Lemur-2 NANAZ, OSW Cazorla, Unicorn-2J, Unicorn-2K), Aether-1, Aether-2, FalconSAT-X, ICEYE × 4, Pelican-1, B1B2 Barry, Flock-4q × 36, Lemur-2 × 10, PEARL-1C, PEARL-1H, Platform 5, STORK-7 / Aman-1 O3b mPOWER 5, O3b mPOWER 6 Haiyang-3A Starlink G6-28 (23 satellites) Starlink G7-7 (22 satellites) Malligyong-1 F3 Starlink G6-29 (23 satellites) Kosmos 2572 / Razdan 1 Starlink G6-30 (23 satellites)
December	Progress MS-25 ION SCV-012 (Unicorn × 3), MicroHETsat, EIRSAT-1, Hayasat-1 Starlink G6-31 (23 satellites) Starlink G6-33 (23 satellites) Starlink G7-8 (22 satellites) Yaogan 39-05 (3 satellites) Reusable Experimental Spacecraft Yaogan 41 Starlink G6-34 (23 satellites) Kosmos 2573 / Bars-M 5L Starlink G6-32 (23 satellites) SARah-2, SARah-3 Shiyan 24C-01, Shiyan 24C-02, Shiyan 24C-03 BeiDou-3 M25, BeiDou-3 M26 Kosmos 2574 / Razbeg No.1 USA-349 / X-37B OTV-7 Starlink G6-36 (23 satellites)
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).

Silentbarker

See also

References

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