Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    8.921046E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T07:57:12+0800
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    1 Object 1

    AOE ID 49729
    NORAD ID 49729
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 53508
    NORAD ID 53508
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3251 STARLINK-4443
    Time of Closest Approach 2026-09-12T08:03:28+0000
    Collision Probability (Pc) 8.921046E-7
    Conjunction Distance (km) 2.776 km
    Relative Speed (km/s) 6.058 km/s
    Conjunction Risk Parameters R (Radial): -2.772 | I (In-track): -0.118 | C (Cross-track): -0.056
    Collision Risk Index (CRI) 0.34
    X Position (km) 6270.819 6268.252
    Position Y (km) 1743.859 1743.114
    Position Z (km) -2141.019 -2140.274
    Velocity X (km/s) 0.487 2.543
    Velocity Y (km/s) 5.131 -0.349
    Velocity Z (km/s) 5.623 7.183

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3251 STARLINK-4443
    Semimajor Axis (a) 6848.868 km 6843.702 km
    Eccentricity (e) 0.000091 0.000099
    Inclination (i) 53.1612° 97.2870°
    RAAN 33.4442° 12.1018°
    Perigee Argument 73.1422° 98.5705°
    Mean Anomaly (M) 286.9679° 261.5650°
    Apogee 471.352 km 466.241 km
    Perigee 470.110 km 464.889 km
    Orbit Epoch 2026-09-11T13:21:57+0000 2026-09-11T07:04:47+0000

    STARLINK-3251 & STARLINK-4443 Collision Probability (Pc) Trend

    STARLINK-3251 & STARLINK-4443 Collision Probability (Pc) TrendNot Available

    STARLINK-3251 & STARLINK-4443 Miss Distance (Miss Distance) Trend

    STARLINK-3251 & STARLINK-4443 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3251Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4443Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3251Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4443Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3251

    No nearby objects data