Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.911494E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T22:24:05+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 52994
    NORAD ID 52994
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 66120
    NORAD ID 66120
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4256 STARLINK-35553
    Time of Closest Approach 2026-10-22T10:18:27+0000
    Collision Probability (Pc) 1.911494E-6
    Conjunction Distance (km) 1.962 km
    Relative Speed (km/s) 7.19 km/s
    Conjunction Risk Parameters R (Radial): -0.319 | I (In-track): -1.707 | C (Cross-track): -0.91
    Collision Risk Index (CRI) 0.41
    X Position (km) -4599.345 -4599.287
    Position Y (km) -653.258 -655.205
    Position Z (km) 5011.96 5012.194
    Velocity X (km/s) 3.562 -1.664
    Velocity Y (km/s) -6.302 -7.044
    Velocity Z (km/s) 2.441 -2.441

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4256 STARLINK-35553
    Semimajor Axis (a) 6840.867 km 6840.844 km
    Eccentricity (e) 0.000126 0.000040
    Inclination (i) 53.1597° 53.1610°
    RAAN 145.4244° 74.9775°
    Perigee Argument 84.9791° 44.0451°
    Mean Anomaly (M) 275.1356° 316.0583°
    Apogee 463.595 km 462.979 km
    Perigee 461.865 km 462.435 km
    Orbit Epoch 2026-10-20T00:10:43+0000 2026-10-19T16:09:38+0000

    STARLINK-4256 & STARLINK-35553 Collision Probability (Pc) Trend

    STARLINK-4256 & STARLINK-35553 Collision Probability (Pc) TrendNot Available

    STARLINK-4256 & STARLINK-35553 Miss Distance (Miss Distance) Trend

    STARLINK-4256 & STARLINK-35553 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4256Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-35553Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4256Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-35553Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4256

    No nearby objects data