Update README.md

README.md

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----
-license: apache-2.0
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+---
+title: Hektor-Hohmann Transfer Orbit Dataset
+license: apache-2.0
+datasets:
+- name: Hektor-Hohmann Transfer Orbit
+  size: 52 columns
+  rows: "~30,000"
+tags:
+- space
+- orbital-mechanics
+- synthetic-data
+- foundation-model
+size_categories: large
+task_categories:
+- time-series
+- simulation
+---
+
+# **Hektor-Hohmann Transfer Orbit Dataset Card**
+
+**Author:** ATaylor  
+**Contact:** [hf.co/taylor658](https://hf.co/taylor658)  
+**License:** [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0)  
+**Rows:** ~30,000  
+
+---
+
+## **Dataset Summary**
+
+This dataset contains a comprehensive set of synthetic data for an interplanetary mission to **624 Hektor**, modeled using a Type II Hohmann transfer orbit. It features:
+
+- **LEO Departure** and heliocentric trajectory phases.
+- **Jupiter gravity assist** flyby.
+- **Electric propulsion** thrust arcs.
+- Final insertion at 624 Hektor on **March 18, 2032**.
+
+The dataset is ideal for machine learning tasks related to orbital mechanics, low-thrust mission optimization, and multi-body transfer simulation.
+
+---
+
+## **Mission Profile**
+
+1. **LEO Departure**: Initial departure from Earth's orbit using electric propulsion.
+2. **Heliocentric Transfer**: Transitioning into an interplanetary trajectory.
+3. **Jupiter Gravity Assist**: Utilizing Jupiter’s gravity for a velocity boost.
+4. **Arrival at 624 Hektor**: Final insertion burn at the target asteroid.
+
+**Final Event**: **March 18, 2032**, orbit capture at 624 Hektor.
+
+---
+
+## **Dataset Columns**
+
+### Key Orbital Mechanics Parameters:
+
+1. **Timestamp_UTC**: Universal Coordinated Time for each record.
+2. **Mission_Segment**: Categorized mission phase (e.g., "LEO Departure," "Jupiter Flyby").
+3. **Central_Body**: The celestial body being orbited (Earth/Sun/Hektor).
+4. **Orbital_Radius_km**: Current orbital distance from the central body.
+5. **Semi_Major_Axis_km**: Semi-major axis of the elliptical orbit.
+6. **Eccentricity**: Shape of the orbit (0 for circular, <1 for elliptical).
+7. **Inclination_deg**: Orbital plane tilt relative to the ecliptic plane.
+8. **True_Anomaly_deg**: Orbital position relative to the periapsis.
+9. **Phase_Angle_deg**: Angular alignment between the spacecraft and target.
+10. **Velocity_km_s**: Spacecraft velocity relative to the central body.
+
+### Thrust and Propulsion Data:
+
+11. **Thrust_Level_N**: Thrust output in Newtons.
+12. **Propellant_Mass_kg**: Remaining propellant mass.
+13. **Specific_Impulse_s**: Propulsion efficiency parameter.
+14. **Engine_Power_kW**: Electric propulsion power.
+
+### Gravity Assist Parameters:
+
+15. **Jupiter_Encounter_DateTime_UTC**: Timestamp for Jupiter gravity assist.
+16. **Closest_Approach_Dist_Jupiter_km**: Minimum distance to Jupiter.
+17. **Inbound_Velocity_Rel_Jupiter_km_s**: Velocity approaching Jupiter.
+18. **Outbound_Velocity_Rel_Jupiter_km_s**: Velocity after gravity assist.
+19. **Gravity_Assist_DV_Eq_km_s**: Equivalent velocity gain from the assist.
+
+### Arrival Data:
+
+20. **Hektor_Encounter_DateTime_UTC**: Arrival time at 624 Hektor.
+21. **Relative_Velocity_at_Hektor_km_s**: Velocity at 624 Hektor encounter.
+22. **Capture_Insertion_DV_km_s**: Delta-V required for orbital capture.
+23. **Final_Orbit_SMA_km**: Semi-major axis of the orbit around Hektor.
+24. **Final_Orbit_Inclination_deg**: Inclination of the final orbit.
+
+---
+
+## **Intended Usage**
+
+1. **Foundation Model Training**: Time-series or tabular input for a broad model (e.g., analyzing or predicting orbital mechanics states).
+2. **Synthetic Orbital Data Exploration**: Demonstrating multi-body, low-thrust mission profiles.
+
+**Disclaimer**: Values are not from real missions. They are randomly or linearly generated placeholders.
+
+---
+
+## **License & Citation**
+
+**License:** [Apache 2.0](https://www.apache.org/licenses/LICENSE-2.0)
+
+### Citation
+```bibtex
+@misc{hektor_hohmann_transfer_2024,
+  title={{Hektor-Hohmann Transfer Orbit Dataset}},
+  author={ATaylor},
+  year={2024},
+  note={Synthetic dataset for Jupiter-assisted transfer to 624 Hektor.},
+  howpublished={Generated for research and simulation purposes.}
+}
+```
+
+---