Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    5.10528E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T09:10:10+0800
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    1 Object 1

    AOE ID 41456
    NORAD ID 41456
    Object Type PAYLOAD
    Country
    ESA ESA
    VS

    2 Object 2

    AOE ID 55650
    NORAD ID 55650
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter SENTINEL 1B STARLINK-5494
    Time of Closest Approach 2026-09-03T10:20:53+0000
    Collision Probability (Pc) 5.10528E-5
    Conjunction Distance (km) 0.824 km
    Relative Speed (km/s) 14.451 km/s
    Conjunction Risk Parameters R (Radial): 0.806 | I (In-track): 0.044 | C (Cross-track): 0.168
    Collision Risk Index (CRI) 0.69
    X Position (km) -2478.891 -2479.328
    Position Y (km) 1546.299 1546.403
    Position Z (km) 6299.588 6300.277
    Velocity X (km/s) -4.151 0.133
    Velocity Y (km/s) 5.576 -7.343
    Velocity Z (km/s) -3.004 1.851

    Orbital Parameters 国际轨道数据源

    Parameter SENTINEL 1B STARLINK-5494
    Semimajor Axis (a) 6946.745 km 6950.190 km
    Eccentricity (e) 0.001176 0.000246
    Inclination (i) 98.0897° 69.9992°
    RAAN 309.3318° 99.8645°
    Perigee Argument 233.5110° 261.2254°
    Mean Anomaly (M) 126.5029° 98.8627°
    Apogee 576.779 km 573.762 km
    Perigee 560.437 km 570.344 km
    Orbit Epoch 2026-09-02T14:37:25+0000 2026-09-02T00:22:05+0000

    SENTINEL 1B & STARLINK-5494 Collision Probability (Pc) Trend

    SENTINEL 1B & STARLINK-5494 Collision Probability (Pc) TrendNot Available

    SENTINEL 1B & STARLINK-5494 Miss Distance (Miss Distance) Trend

    SENTINEL 1B & STARLINK-5494 Miss Distance (Miss Distance) TrendNot Available

    SENTINEL 1BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5494Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SENTINEL 1BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5494Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SENTINEL 1B

    No nearby objects data