SpaceHub

SpaceHub is a state-of-the-art few-body gravity integration toolkit built in C++. It implements Algorithmic Regularization (AR) and symplectic integrators to handle scenarios that break conventional codes:

$ spacehub --status
┌─────────────────────────────────────────────┐
│  SpaceHub v1.0                              │
│  Extreme mass ratios      ✓                 │
│  High eccentricities      ✓                 │
│  Close encounters         ✓                 │
│  Round-off error control  ✓                 │
│  Long-term integration    ✓                 │
└─────────────────────────────────────────────┘

Key Features:

• Algorithmic Regularization for extreme mass ratios (e.g., SMBH + stellar-mass objects)
• Symplectic integrators ensuring time-reversibility
• Rigorous round-off error control for long-term orbital evolution
• Easy-to-use API designed for community adoption
• Applications: SMBH binaries, planetary system evolution, chaotic star clusters

Publication: Wang et al. (2021), MNRAS, 505, 1053