Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.166879E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T09:09:26+0800
    View CDM
    Download CDM 1.0

    1 Object 1

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

    2 Object 2

    AOE ID 56547
    NORAD ID 56547
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-6291
    Time of Closest Approach 2026-09-03T05:54:40+0000
    Collision Probability (Pc) 1.166879E-6
    Conjunction Distance (km) 2.48 km
    Relative Speed (km/s) 7.2 km/s
    Conjunction Risk Parameters R (Radial): 2.478 | I (In-track): 0.085 | C (Cross-track): 0.051
    Collision Risk Index (CRI) 0.36
    X Position (km) -1717.983 -1718.648
    Position Y (km) 6421.541 6423.872
    Position Z (km) 1685.041 1685.562
    Velocity X (km/s) 0.462 -5.876
    Velocity Y (km/s) 2.058 -0.293
    Velocity Z (km/s) -7.332 -4.853

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-6291
    Semimajor Axis (a) 6862.133 km 6861.159 km
    Eccentricity (e) 0.000812 0.000233
    Inclination (i) 97.1417° 43.0073°
    RAAN 282.5004° 309.7862°
    Perigee Argument 165.0324° 284.7729°
    Mean Anomaly (M) 195.1157° 75.2865°
    Apogee 489.565 km 484.621 km
    Perigee 478.427 km 481.423 km
    Orbit Epoch 2026-09-02T13:27:52+0000 2026-09-01T15:33:25+0000

    YAOGAN 21 & STARLINK-6291 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-6291 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-6291 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-6291 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-6291Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-6291Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data