Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.622697E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T09:43:19+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 52850
    NORAD ID 52850
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 63243
    NORAD ID 63243
    Object Type PAYLOAD
    Country
    IT IT

    Conjunction Constraints

    Parameter STARLINK-4187 HERMES-2
    Time of Closest Approach 2026-09-04T14:14:16+0000
    Collision Probability (Pc) 1.622697E-6
    Conjunction Distance (km) 2.604 km
    Relative Speed (km/s) 14.593 km/s
    Conjunction Risk Parameters R (Radial): 0.424 | I (In-track): -0.753 | C (Cross-track): 2.457
    Collision Risk Index (CRI) 0.39
    X Position (km) 5030.476 5029.067
    Position Y (km) -3387.887 -3389.733
    Position Z (km) 3173.335 3174.513
    Velocity X (km/s) 0.718 2.294
    Velocity Y (km/s) 5.744 -2.88
    Velocity Z (km/s) 4.977 -6.688

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4187 HERMES-2
    Semimajor Axis (a) 6848.906 km 6849.152 km
    Eccentricity (e) 0.000126 0.000393
    Inclination (i) 53.1602° 97.3772°
    RAAN 312.3948° 139.2416°
    Perigee Argument 69.0116° 176.5153°
    Mean Anomaly (M) 291.1020° 183.6117°
    Apogee 471.635 km 473.709 km
    Perigee 469.903 km 468.321 km
    Orbit Epoch 2026-09-02T13:32:15+0000 2026-09-01T16:35:07+0000

    STARLINK-4187 & HERMES-2 Collision Probability (Pc) Trend

    STARLINK-4187 & HERMES-2 Collision Probability (Pc) TrendNot Available

    STARLINK-4187 & HERMES-2 Miss Distance (Miss Distance) Trend

    STARLINK-4187 & HERMES-2 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4187Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HERMES-2Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4187Collision Probability Trend

    Object 1 Probability TrendNot Available

    HERMES-2Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4187

    No nearby objects data