Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    4.523275E-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 59568
    NORAD ID 59568
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-31471
    Time of Closest Approach 2026-10-31T05:59:39+0000
    Collision Probability (Pc) 4.523275E-6
    Conjunction Distance (km) 1.67 km
    Relative Speed (km/s) 13.667 km/s
    Conjunction Risk Parameters R (Radial): 1.399 | I (In-track): 0.399 | C (Cross-track): -0.818
    Collision Risk Index (CRI) 0.48
    X Position (km) 5494.754 5496.36
    Position Y (km) -1638.207 -1637.903
    Position Z (km) -3769.928 -3770.265
    Velocity X (km/s) 3.64 -0.033
    Velocity Y (km/s) -2.267 6.97
    Velocity Z (km/s) 6.3 -3.079

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-31471
    Semimajor Axis (a) 6860.514 km 6861.169 km
    Eccentricity (e) 0.000709 0.000085
    Inclination (i) 97.1331° 42.9976°
    RAAN 337.4905° 128.0107°
    Perigee Argument 348.4536° 229.4371°
    Mean Anomaly (M) 11.6541° 130.6407°
    Apogee 487.243 km 483.617 km
    Perigee 477.511 km 482.447 km
    Orbit Epoch 2026-10-30T00:16:30+0000 2026-10-29T13:44:41+0000

    YAOGAN 21 & STARLINK-31471 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-31471 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-31471 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-31471 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31471Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31471Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data