Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.267172E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T00:43:50+0800
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    1 Object 1

    AOE ID 51139
    NORAD ID 51139
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 52999
    NORAD ID 52999
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3172 STARLINK-4217
    Time of Closest Approach 2026-09-02T17:31:01+0000
    Collision Probability (Pc) 1.267172E-6
    Conjunction Distance (km) 2.839 km
    Relative Speed (km/s) 11.895 km/s
    Conjunction Risk Parameters R (Radial): -2.247 | I (In-track): 1.087 | C (Cross-track): -1.35
    Collision Risk Index (CRI) 0.37
    X Position (km) -6165.428 -6162.821
    Position Y (km) -2203.525 -2204.434
    Position Z (km) -2000.705 -2000.048
    Velocity X (km/s) -0.022 3.243
    Velocity Y (km/s) -5.087 -3.92
    Velocity Z (km/s) 5.689 -5.69

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3172 STARLINK-4217
    Semimajor Axis (a) 6843.374 km 6840.855 km
    Eccentricity (e) 0.000144 0.000112
    Inclination (i) 53.1598° 53.1617°
    RAAN 215.3274° 11.4825°
    Perigee Argument 69.7087° 83.1341°
    Mean Anomaly (M) 290.4070° 276.9789°
    Apogee 466.221 km 463.483 km
    Perigee 464.253 km 461.953 km
    Orbit Epoch 2026-09-02T05:05:50+0000 2026-09-01T15:37:53+0000

    STARLINK-3172 & STARLINK-4217 Collision Probability (Pc) Trend

    STARLINK-3172 & STARLINK-4217 Collision Probability (Pc) TrendNot Available

    STARLINK-3172 & STARLINK-4217 Miss Distance (Miss Distance) Trend

    STARLINK-3172 & STARLINK-4217 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3172Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4217Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3172Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4217Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3172

    No nearby objects data