Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    8.320624E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-21T12:56:50+0800
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    1 Object 1

    AOE ID 43171
    NORAD ID 43171
    Object Type PAYLOAD
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 55751
    NORAD ID 55751
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN-30 L STARLINK-5577
    Time of Closest Approach 2026-09-22T07:45:02+0000
    Collision Probability (Pc) 8.320624E-6
    Conjunction Distance (km) 1.347 km
    Relative Speed (km/s) 11.997 km/s
    Conjunction Risk Parameters R (Radial): -1.078 | I (In-track): 0.5 | C (Cross-track): 0.634
    Collision Risk Index (CRI) 0.53
    X Position (km) -1975.75 -1976.188
    Position Y (km) 6612.517 6611.29
    Position Z (km) -682.619 -682.276
    Velocity X (km/s) -5.861 -2.696
    Velocity Y (km/s) -2.189 -0.077
    Velocity Z (km/s) -4.288 7.089

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN-30 L STARLINK-5577
    Semimajor Axis (a) 6935.718 km 6933.237 km
    Eccentricity (e) 0.000103 0.000598
    Inclination (i) 34.9954° 70.0019°
    RAAN 289.6579° 112.2802°
    Perigee Argument 105.9906° 291.8122°
    Mean Anomaly (M) 254.0916° 10.8182°
    Apogee 558.293 km 559.250 km
    Perigee 556.869 km 550.950 km
    Orbit Epoch 2026-09-20T11:52:02+0000 2026-09-20T22:00:03+0000

    YAOGAN-30 L & STARLINK-5577 Collision Probability (Pc) Trend

    YAOGAN-30 L & STARLINK-5577 Collision Probability (Pc) TrendNot Available

    YAOGAN-30 L & STARLINK-5577 Miss Distance (Miss Distance) Trend

    YAOGAN-30 L & STARLINK-5577 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN-30 LMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5577Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN-30 LCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5577Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN-30 L

    No nearby objects data