Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.773009E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-28T00:31:44+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 67990
    NORAD ID 67990
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-36951
    Time of Closest Approach 2026-10-28T15:20:29+0000
    Collision Probability (Pc) 1.773009E-6
    Conjunction Distance (km) 2.454 km
    Relative Speed (km/s) 14.218 km/s
    Conjunction Risk Parameters R (Radial): 2.443 | I (In-track): -0.089 | C (Cross-track): 0.216
    Collision Risk Index (CRI) 0.4
    X Position (km) 5878.43 5880.467
    Position Y (km) -2875.482 -2876.703
    Position Z (km) 2046.23 2046.849
    Velocity X (km/s) -2.47 3.886
    Velocity Y (km/s) 0.104 4.604
    Velocity Z (km/s) 7.218 -4.677

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-36951
    Semimajor Axis (a) 6860.587 km 6861.130 km
    Eccentricity (e) 0.000749 0.000150
    Inclination (i) 97.1334° 42.9979°
    RAAN 334.8590° 182.1941°
    Perigee Argument 358.0368° 274.4754°
    Mean Anomaly (M) 2.0841° 85.5926°
    Apogee 487.592 km 484.021 km
    Perigee 477.308 km 481.965 km
    Orbit Epoch 2026-10-27T06:15:18+0000 2026-10-27T02:34:42+0000

    YAOGAN 21 & STARLINK-36951 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-36951 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-36951 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-36951 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-36951Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-36951Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data