Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.130662E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-28T00:31:41+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 59085
    NORAD ID 59085
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter YAOGAN 21 STARLINK-31290
    Time of Closest Approach 2026-10-28T22:56:21+0000
    Collision Probability (Pc) 1.130662E-6
    Conjunction Distance (km) 2.974 km
    Relative Speed (km/s) 10.794 km/s
    Conjunction Risk Parameters R (Radial): -0.876 | I (In-track): 2.009 | C (Cross-track): -2.01
    Collision Risk Index (CRI) 0.36
    X Position (km) 4865.665 4867.012
    Position Y (km) -1488.512 -1487.203
    Position Z (km) -4605.504 -4603.198
    Velocity X (km/s) 4.442 2.999
    Velocity Y (km/s) -2.693 6.943
    Velocity Z (km/s) 5.572 0.93

    Orbital Parameters 国际轨道数据源

    Parameter YAOGAN 21 STARLINK-31290
    Semimajor Axis (a) 6860.587 km 6861.214 km
    Eccentricity (e) 0.000749 0.000385
    Inclination (i) 97.1334° 43.0029°
    RAAN 334.8590° 71.9165°
    Perigee Argument 358.0368° 288.0382°
    Mean Anomaly (M) 2.0841° 72.0051°
    Apogee 487.592 km 485.716 km
    Perigee 477.308 km 480.438 km
    Orbit Epoch 2026-10-27T06:15:18+0000 2026-10-26T16:21:43+0000

    YAOGAN 21 & STARLINK-31290 Collision Probability (Pc) Trend

    YAOGAN 21 & STARLINK-31290 Collision Probability (Pc) TrendNot Available

    YAOGAN 21 & STARLINK-31290 Miss Distance (Miss Distance) Trend

    YAOGAN 21 & STARLINK-31290 Miss Distance (Miss Distance) TrendNot Available

    YAOGAN 21Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31290Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    YAOGAN 21Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31290Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with YAOGAN 21

    No nearby objects data