Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.036496E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T18:36:21+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 66530
    NORAD ID 66530
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-35961
    Time of Closest Approach 2026-09-06T03:00:30+0000
    Collision Probability (Pc) 1.036496E-6
    Conjunction Distance (km) 2.925 km
    Relative Speed (km/s) 8.929 km/s
    Conjunction Risk Parameters R (Radial): -2.213 | I (In-track): 1.546 | C (Cross-track): -1.124
    Collision Risk Index (CRI) 0.35
    X Position (km) -2009.206 -2008.7
    Position Y (km) 5259.955 5261.054
    Position Z (km) 3908.385 3911.048
    Velocity X (km/s) -0.459 -7.053
    Velocity Y (km/s) 4.437 -0.57
    Velocity Z (km/s) -6.191 -2.848

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-35961
    Semimajor Axis (a) 6862.104 km 6861.164 km
    Eccentricity (e) 0.000838 0.000149
    Inclination (i) 97.1418° 43.0034°
    RAAN 284.0687° 352.8678°
    Perigee Argument 159.4614° 270.0739°
    Mean Anomaly (M) 200.6964° 89.9942°
    Apogee 489.717 km 484.051 km
    Perigee 478.217 km 482.003 km
    Orbit Epoch 2026-09-04T04:46:33+0000 2026-09-03T16:24:38+0000

    YAOGAN 21 & STARLINK-35961 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-35961 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-35961 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-35961 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-35961Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-35961Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data