Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.09643E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T06:54:19+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 59296
    NORAD ID 59296
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-31463
    Time of Closest Approach 2026-09-16T12:33:28+0000
    Collision Probability (Pc) 1.09643E-6
    Conjunction Distance (km) 2.915 km
    Relative Speed (km/s) 9.794 km/s
    Conjunction Risk Parameters R (Radial): -2.129 | I (In-track): 1.518 | C (Cross-track): -1.286
    Collision Risk Index (CRI) 0.36
    X Position (km) 1819.244 1819.275
    Position Y (km) -4996.201 -4993.286
    Position Z (km) 4331.18 4331.156
    Velocity X (km/s) -2.779 6.216
    Velocity Y (km/s) 4.061 3.964
    Velocity Z (km/s) 5.825 1.955

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-31463
    Semimajor Axis (a) 6861.809 km 6861.200 km
    Eccentricity (e) 0.000932 0.000145
    Inclination (i) 97.1397° 43.0028°
    RAAN 294.9207° 237.5999°
    Perigee Argument 124.2617° 274.6734°
    Mean Anomaly (M) 235.9507° 85.3951°
    Apogee 490.065 km 484.061 km
    Perigee 477.279 km 482.065 km
    Orbit Epoch 2026-09-15T12:48:01+0000 2026-09-15T00:10:08+0000

    YAOGAN 21 & STARLINK-31463 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-31463 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-31463 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-31463 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31463Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31463Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data