Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    3.903469E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T03:16:29+0800
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    1 Object 1

    AOE ID 49744
    NORAD ID 49744
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 55109
    NORAD ID 55109
    Object Type PAYLOAD
    Country
    CH CH

    Conjunction Constraints

    Parameter STARLINK-3231 ASTROCAST-0402
    Time of Closest Approach 2026-10-19T20:48:38+0000
    Collision Probability (Pc) 3.903469E-6
    Conjunction Distance (km) 1.784 km
    Relative Speed (km/s) 14.758 km/s
    Conjunction Risk Parameters R (Radial): 0.006 | I (In-track): -0.462 | C (Cross-track): 1.723
    Collision Risk Index (CRI) 0.47
    X Position (km) -5910.917 -5911.645
    Position Y (km) -3315.649 -3314.165
    Position Z (km) 984.816 985.485
    Velocity X (km/s) 3.03 -1.455
    Velocity Y (km/s) -3.6 0.346
    Velocity Z (km/s) 6.009 -7.485

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3231 ASTROCAST-0402
    Semimajor Axis (a) 6848.829 km 6849.868 km
    Eccentricity (e) 0.000108 0.000545
    Inclination (i) 53.1586° 97.5569°
    RAAN 207.2981° 27.5386°
    Perigee Argument 88.6437° 143.8283°
    Mean Anomaly (M) 271.4688° 216.3327°
    Apogee 471.429 km 475.467 km
    Perigee 469.955 km 467.995 km
    Orbit Epoch 2026-10-18T22:50:30+0000 2026-10-19T05:57:01+0000

    STARLINK-3231 & ASTROCAST-0402 Collision Probability (Pc) Trend

    STARLINK-3231 & ASTROCAST-0402 Collision Probability (Pc) TrendNot Available

    STARLINK-3231 & ASTROCAST-0402 Miss Distance (Miss Distance) Trend

    STARLINK-3231 & ASTROCAST-0402 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3231Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    ASTROCAST-0402Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3231Collision Probability Trend

    Object 1 Probability TrendNot Available

    ASTROCAST-0402Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3231

    No nearby objects data