Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.820619E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T03:06:50+0800
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    1 Object 1

    AOE ID 52503
    NORAD ID 52503
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 53419
    NORAD ID 53419
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3861 STARLINK-4476
    Time of Closest Approach 2026-10-21T23:15:21+0000
    Collision Probability (Pc) 9.820619E-7
    Conjunction Distance (km) 2.781 km
    Relative Speed (km/s) 7.232 km/s
    Conjunction Risk Parameters R (Radial): -0.378 | I (In-track): 2.425 | C (Cross-track): -1.307
    Collision Risk Index (CRI) 0.35
    X Position (km) 3838.949 3837.171
    Position Y (km) 2648.167 2650.287
    Position Z (km) -5012.517 -5012.242
    Velocity X (km/s) -1.635 -5.992
    Velocity Y (km/s) 7.029 4.021
    Velocity Z (km/s) 2.463 -2.463

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3861 STARLINK-4476
    Semimajor Axis (a) 6839.501 km 6840.876 km
    Eccentricity (e) 0.000092 0.000131
    Inclination (i) 53.1595° 53.1574°
    RAAN 101.6331° 174.2447°
    Perigee Argument 76.6070° 96.6915°
    Mean Anomaly (M) 283.5036° 263.4236°
    Apogee 461.997 km 463.636 km
    Perigee 460.731 km 461.842 km
    Orbit Epoch 2026-10-19T02:46:01+0000 2026-10-19T02:58:03+0000

    STARLINK-3861 & STARLINK-4476 Collision Probability (Pc) Trend

    STARLINK-3861 & STARLINK-4476 Collision Probability (Pc) TrendNot Available

    STARLINK-3861 & STARLINK-4476 Miss Distance (Miss Distance) Trend

    STARLINK-3861 & STARLINK-4476 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3861Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4476Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3861Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4476Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3861

    No nearby objects data