Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.649334E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T17:52:11+0800
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    1 Object 1

    AOE ID 61530
    NORAD ID 61530
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 63833
    NORAD ID 63833
    Object Type PAYLOAD
    Country
    IT IT

    Conjunction Constraints

    Parameter STARLINK-32261 HERMES 4
    Time of Closest Approach 2026-09-04T19:16:19+0000
    Collision Probability (Pc) 3.649334E-6
    Conjunction Distance (km) 1.763 km
    Relative Speed (km/s) 12.626 km/s
    Conjunction Risk Parameters R (Radial): -0.631 | I (In-track): -0.925 | C (Cross-track): -1.36
    Collision Risk Index (CRI) 0.46
    X Position (km) 2764.65 2765.127
    Position Y (km) -3123.29 -3122.116
    Position Z (km) -5439.419 -5440.645
    Velocity X (km/s) 6.299 -5.122
    Velocity Y (km/s) 4.215 3.358
    Velocity Z (km/s) 0.782 -4.531

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-32261 HERMES 4
    Semimajor Axis (a) 6848.855 km 6848.295 km
    Eccentricity (e) 0.000137 0.000096
    Inclination (i) 53.1626° 97.3754°
    RAAN 33.5439° 139.9158°
    Perigee Argument 89.2100° 324.3507°
    Mean Anomaly (M) 270.9058° 35.7670°
    Apogee 471.654 km 470.817 km
    Perigee 469.782 km 469.499 km
    Orbit Epoch 2026-09-03T21:42:29+0000 2026-09-03T10:54:13+0000

    STARLINK-32261 & HERMES 4 Collision Probability (Pc) Trend

    STARLINK-32261 & HERMES 4 Collision Probability (Pc) TrendNot Available

    STARLINK-32261 & HERMES 4 Miss Distance (Miss Distance) Trend

    STARLINK-32261 & HERMES 4 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-32261Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HERMES 4Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-32261Collision Probability Trend

    Object 1 Probability TrendNot Available

    HERMES 4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-32261

    No nearby objects data