Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.78656E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-17T21:02:14+0800
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    1 Object 1

    AOE ID 51990
    NORAD ID 51990
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 64881
    NORAD ID 64881
    Object Type UNKNOWN
    Country
    TBD TBD

    Conjunction Constraints

    Parameter STARLINK-3657 OBJECT F
    Time of Closest Approach 2026-10-18T15:50:45+0000
    Collision Probability (Pc) 1.78656E-6
    Conjunction Distance (km) 2.475 km
    Relative Speed (km/s) 14.773 km/s
    Conjunction Risk Parameters R (Radial): -2.342 | I (In-track): 0.212 | C (Cross-track): 0.768
    Collision Risk Index (CRI) 0.4
    X Position (km) -901.088 -900.046
    Position Y (km) -6781.319 -6779.099
    Position Z (km) -111.958 -111.629
    Velocity X (km/s) 4.549 -0.998
    Velocity Y (km/s) -0.511 0.023
    Velocity Z (km/s) -6.111 7.57

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3657 OBJECT F
    Semimajor Axis (a) 6840.833 km 6835.855 km
    Eccentricity (e) 0.000153 0.000916
    Inclination (i) 53.1599° 97.4715°
    RAAN 90.4093° 260.9263°
    Perigee Argument 86.1833° 99.1940°
    Mean Anomaly (M) 273.9344° 261.0340°
    Apogee 463.744 km 463.982 km
    Perigee 461.648 km 451.454 km
    Orbit Epoch 2026-10-16T19:17:21+0000 2026-10-17T07:01:07+0000

    STARLINK-3657 & OBJECT F Collision Probability (Pc) Trend

    STARLINK-3657 & OBJECT F Collision Probability (Pc) TrendNot Available

    STARLINK-3657 & OBJECT F Miss Distance (Miss Distance) Trend

    STARLINK-3657 & OBJECT F Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3657Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    OBJECT FMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3657Collision Probability Trend

    Object 1 Probability TrendNot Available

    OBJECT FCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3657

    No nearby objects data