Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.11319E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-15T23:17:35+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 67404
    NORAD ID 67404
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-36484
    Time of Closest Approach 2026-09-16T15:41:20+0000
    Collision Probability (Pc) 1.11319E-6
    Conjunction Distance (km) 2.796 km
    Relative Speed (km/s) 9.151 km/s
    Conjunction Risk Parameters R (Radial): -2.778 | I (In-track): 0.247 | C (Cross-track): -0.179
    Collision Risk Index (CRI) 0.36
    X Position (km) 1962.92 1962.199
    Position Y (km) -5181.815 -5179.517
    Position Z (km) 4041.877 4040.458
    Velocity X (km/s) -2.674 5.781
    Velocity Y (km/s) 3.75 4.234
    Velocity Z (km/s) 6.077 2.614

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-36484
    Semimajor Axis (a) 6861.812 km 6861.168 km
    Eccentricity (e) 0.000928 0.000123
    Inclination (i) 97.1397° 43.0002°
    RAAN 294.7326° 252.2203°
    Perigee Argument 124.8067° 272.5504°
    Mean Anomaly (M) 235.4047° 87.5206°
    Apogee 490.042 km 483.877 km
    Perigee 477.308 km 482.185 km
    Orbit Epoch 2026-09-15T08:05:00+0000 2026-09-14T08:30:18+0000

    YAOGAN 21 & STARLINK-36484 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-36484 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-36484 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-36484 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-36484Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-36484Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data