Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.143457E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-30T13:12:17+0800
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    1 Object 1

    AOE ID 57820
    NORAD ID 57820
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 57912
    NORAD ID 57912
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-30409 STARLINK-30477
    Time of Closest Approach 2026-10-31T21:01:25+0000
    Collision Probability (Pc) 2.143457E-5
    Conjunction Distance (km) 0.903 km
    Relative Speed (km/s) 6.445 km/s
    Conjunction Risk Parameters R (Radial): -0.624 | I (In-track): -0.589 | C (Cross-track): 0.276
    Collision Risk Index (CRI) 0.62
    X Position (km) 1750.729 1749.951
    Position Y (km) -5256.191 -5255.919
    Position Z (km) -4051.397 -4051.028
    Velocity X (km/s) 7.152 5.95
    Velocity Y (km/s) 0.378 3.986
    Velocity Z (km/s) 2.601 -2.602

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-30409 STARLINK-30477
    Semimajor Axis (a) 6861.181 km 6861.228 km
    Eccentricity (e) 0.000146 0.000218
    Inclination (i) 42.9993° 43.0040°
    RAAN 355.2075° 68.2690°
    Perigee Argument 248.8215° 286.3805°
    Mean Anomaly (M) 111.2481° 226.4774°
    Apogee 484.043 km 484.587 km
    Perigee 482.045 km 481.595 km
    Orbit Epoch 2026-10-29T04:56:44+0000 2026-10-29T20:00:02+0000

    STARLINK-30409 & STARLINK-30477 Collision Probability (Pc) Trend

    STARLINK-30409 & STARLINK-30477 Collision Probability (Pc) TrendNot Available

    STARLINK-30409 & STARLINK-30477 Miss Distance (Miss Distance) Trend

    STARLINK-30409 & STARLINK-30477 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-30409Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-30477Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-30409Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-30477Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-30409

    No nearby objects data