# SpaceTug — Comprehensive In-Orbit Servicing & Active Space Debris Removal Documentation

## Mission Statement
SpaceTug is dedicated to keeping space sustainable and collision-free. As Low Earth Orbit (LEO) becomes crowded with thousands of mega-constellations and tens of thousands of trackable space debris pieces, SpaceTug designs autonomous spacecraft capable of rendezvousing with, docking to, servicing, refueling, and deorbiting space assets.

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## Service Offerings

### 1. Satellite Life Extension & In-Orbit Refueling
- **Overview**: Extends the operational lifespan of high-value commercial and government satellites in LEO and GEO.
- **Mechanism**: SpaceTug attaches to client satellites via standardized docking interfaces or non-cooperative grapple fixtures to provide attitude control, station-keeping, and propulsive maneuvers.
- **Value Proposition**: Saves satellite operators tens of millions of dollars by deferring expensive replacement launches.

### 2. Active Space Debris Removal (ADR)
- **Overview**: Removes high-risk upper rocket stages, defunct satellites, and orbital fragments from critical operational corridors.
- **Mechanism**: Autonomous rendezvous, optical/LiDAR tracking, magnetic/mechanical capture, and controlled deorbit burn into Earth's upper atmosphere.
- **Impact**: Directly prevents catastrophic Kessler Syndrome collision cascades in crowded orbital shells.

### 3. Space Situational Awareness (SSA) & Collision Avoidance Telemetry
- **Overview**: Real-time tracking and conjunction assessment for satellite operators.
- **Capability**: Integrates multi-source space surveillance network (SSN) telemetry, TLE datasets, and high-precision ephemeris modeling.

### 4. Custom Orbital Mission Launch Manifest
- **Interface**: Custom interactive portal at `https://www.spacetug.tech/book-mission` allowing satellite operators to select orbit type (LEO, MEO, GEO, SSO), mission tier, propulsion requirements, and schedule clearances.

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## Technology Stack & Engineering Architecture
- **Autonomous Guidance, Navigation, and Control (GNC)**: Computer vision algorithms paired with star trackers and LiDAR for relative navigation from 10 km down to sub-centimeter docking distances.
- **Propulsion**: Dual-mode electric Hall thrusters for high-specific-impulse (Isp) orbital transit + fast cold-gas RCS for fine docking alignment.
- **Capture Systems**: Non-cooperative capture mechanisms suitable for legacy satellites without pre-installed docking plates.

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## Contact & Location
- **Website**: https://www.spacetug.tech
- **Email**: hello@spacetug.tech
- **HQ Location**: Chennai, Tamil Nadu, India