Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.863917E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-30T21:15:19+0800
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    1 Object 1

    AOE ID 40143
    NORAD ID 40143
    Object Type PAYLOAD
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 57617
    NORAD ID 57617
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-30148
    Time of Closest Approach 2026-11-01T19:57:33+0000
    Collision Probability (Pc) 2.863917E-6
    Conjunction Distance (km) 1.977 km
    Relative Speed (km/s) 14.144 km/s
    Conjunction Risk Parameters R (Radial): 1.938 | I (In-track): 0.155 | C (Cross-track): -0.359
    Collision Risk Index (CRI) 0.44
    X Position (km) 5901.734 5903.463
    Position Y (km) -2456.181 -2456.538
    Position Z (km) 2480.628 2481.516
    Velocity X (km/s) -2.921 3.883
    Velocity Y (km/s) 0.116 4.864
    Velocity Z (km/s) 7.046 -4.408

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-30148
    Semimajor Axis (a) 6860.514 km 6861.158 km
    Eccentricity (e) 0.000709 0.000147
    Inclination (i) 97.1331° 42.9987°
    RAAN 337.4905° 198.9593°
    Perigee Argument 348.4536° 257.5192°
    Mean Anomaly (M) 11.6541° 303.1194°
    Apogee 487.243 km 484.029 km
    Perigee 477.511 km 482.013 km
    Orbit Epoch 2026-10-30T00:16:30+0000 2026-10-29T20:00:02+0000

    YAOGAN 21 & STARLINK-30148 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-30148 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-30148 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-30148 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-30148Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-30148Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data