Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.619848E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T03:16:46+0800
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    1 Object 1

    AOE ID 53743
    NORAD ID 53743
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 58321
    NORAD ID 58321
    Object Type PAYLOAD
    Country
    FR FR

    Conjunction Constraints

    Parameter STARLINK-4645 PROTOMETHEE
    Time of Closest Approach 2026-10-21T22:05:46+0000
    Collision Probability (Pc) 2.619848E-6
    Conjunction Distance (km) 1.853 km
    Relative Speed (km/s) 9.387 km/s
    Conjunction Risk Parameters R (Radial): 1.851 | I (In-track): -0.074 | C (Cross-track): -0.062
    Collision Risk Index (CRI) 0.43
    X Position (km) 4521.357 4522.651
    Position Y (km) 347.197 347.255
    Position Z (km) 5112.008 5113.333
    Velocity X (km/s) -2.969 -5.486
    Velocity Y (km/s) 6.697 -1.902
    Velocity Z (km/s) 2.166 4.965

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4645 PROTOMETHEE
    Semimajor Axis (a) 6840.892 km 6845.242 km
    Eccentricity (e) 0.000143 0.000912
    Inclination (i) 53.1597° 97.3676°
    RAAN 319.8559° 10.1684°
    Perigee Argument 77.8541° 85.5762°
    Mean Anomaly (M) 282.2621° 274.6522°
    Apogee 463.732 km 473.349 km
    Perigee 461.778 km 460.861 km
    Orbit Epoch 2026-10-19T02:34:33+0000 2026-10-19T07:13:06+0000

    STARLINK-4645 & PROTOMETHEE Collision Probability (Pc) Trend

    STARLINK-4645 & PROTOMETHEE Collision Probability (Pc) TrendNot Available

    STARLINK-4645 & PROTOMETHEE Miss Distance (Miss Distance) Trend

    STARLINK-4645 & PROTOMETHEE Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4645Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    PROTOMETHEEMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4645Collision Probability Trend

    Object 1 Probability TrendNot Available

    PROTOMETHEECollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4645

    No nearby objects data