Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.602944E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T06:14:59+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 53178
    NORAD ID 53178
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 54175
    NORAD ID 54175
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4280 STARLINK-5256
    Time of Closest Approach 2026-10-21T02:19:08+0000
    Collision Probability (Pc) 1.602944E-6
    Conjunction Distance (km) 2.469 km
    Relative Speed (km/s) 12.216 km/s
    Conjunction Risk Parameters R (Radial): -2.336 | I (In-track): -0.487 | C (Cross-track): 0.629
    Collision Risk Index (CRI) 0.39
    X Position (km) -4512.958 -4512.015
    Position Y (km) -5132.938 -5130.661
    Position Z (km) 352.695 352.562
    Velocity X (km/s) 3.654 3.228
    Velocity Y (km/s) -2.783 -3.268
    Velocity Z (km/s) 6.099 -6.1

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4280 STARLINK-5256
    Semimajor Axis (a) 6843.366 km 6840.871 km
    Eccentricity (e) 0.000119 0.000112
    Inclination (i) 53.1609° 53.1600°
    RAAN 230.4201° 53.4736°
    Perigee Argument 89.6844° 74.3630°
    Mean Anomaly (M) 270.4295° 285.7496°
    Apogee 466.045 km 463.502 km
    Perigee 464.413 km 461.966 km
    Orbit Epoch 2026-10-20T05:58:11+0000 2026-10-20T13:02:54+0000

    STARLINK-4280 & STARLINK-5256 Collision Probability (Pc) Trend

    STARLINK-4280 & STARLINK-5256 Collision Probability (Pc) TrendNot Available

    STARLINK-4280 & STARLINK-5256 Miss Distance (Miss Distance) Trend

    STARLINK-4280 & STARLINK-5256 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4280Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5256Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4280Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5256Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4280

    No nearby objects data