Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.268918E-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 59537
    NORAD ID 59537
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-31737
    Time of Closest Approach 2026-10-30T23:40:19+0000
    Collision Probability (Pc) 1.268918E-6
    Conjunction Distance (km) 2.919 km
    Relative Speed (km/s) 12.701 km/s
    Conjunction Risk Parameters R (Radial): 0.703 | I (In-track): -1.558 | C (Cross-track): 2.366
    Collision Risk Index (CRI) 0.37
    X Position (km) 4980.496 4979.233
    Position Y (km) -1360.706 -1362.513
    Position Z (km) -4521.166 -4523.079
    Velocity X (km/s) 4.44 0.83
    Velocity Y (km/s) -2.517 7.455
    Velocity Z (km/s) 5.657 -1.333

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-31737
    Semimajor Axis (a) 6860.514 km 6861.258 km
    Eccentricity (e) 0.000709 0.000136
    Inclination (i) 97.1331° 43.0036°
    RAAN 337.4905° 101.1377°
    Perigee Argument 348.4536° 275.3630°
    Mean Anomaly (M) 11.6541° 111.6923°
    Apogee 487.243 km 484.054 km
    Perigee 477.511 km 482.188 km
    Orbit Epoch 2026-10-30T00:16:30+0000 2026-10-29T20:00:02+0000

    YAOGAN 21 & STARLINK-31737 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-31737 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-31737 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-31737 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31737Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31737Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data