Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.160851E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-16T05:41:04+0800
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    1 Object 1

    AOE ID 52640
    NORAD ID 52640
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 53180
    NORAD ID 53180
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3977 STARLINK-4258
    Time of Closest Approach 2026-10-16T21:15:47+0000
    Collision Probability (Pc) 1.160851E-6
    Conjunction Distance (km) 2.969 km
    Relative Speed (km/s) 11.264 km/s
    Conjunction Risk Parameters R (Radial): 2.56 | I (In-track): 1.015 | C (Cross-track): -1.108
    Collision Risk Index (CRI) 0.36
    X Position (km) 6003.02 6005.486
    Position Y (km) -882.54 -881.383
    Position Z (km) 3151.397 3152.576
    Velocity X (km/s) -1.825 3.325
    Velocity Y (km/s) 5.484 4.727
    Velocity Z (km/s) 4.995 -4.993

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3977 STARLINK-4258
    Semimajor Axis (a) 6840.865 km 6843.400 km
    Eccentricity (e) 0.000132 0.000123
    Inclination (i) 53.1617° 53.1587°
    RAAN 336.6699° 203.2128°
    Perigee Argument 89.7217° 82.6715°
    Mean Anomaly (M) 270.3937° 277.4427°
    Apogee 463.631 km 466.109 km
    Perigee 461.825 km 464.417 km
    Orbit Epoch 2026-10-15T04:27:57+0000 2026-10-15T00:50:21+0000

    STARLINK-3977 & STARLINK-4258 Collision Probability (Pc) Trend

    STARLINK-3977 & STARLINK-4258 Collision Probability (Pc) TrendNot Available

    STARLINK-3977 & STARLINK-4258 Miss Distance (Miss Distance) Trend

    STARLINK-3977 & STARLINK-4258 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3977Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4258Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3977Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4258Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3977

    No nearby objects data