Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    3.427829E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T09:17:53+0800
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    1 Object 1

    AOE ID 53251
    NORAD ID 53251
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 61869
    NORAD ID 61869
    Object Type UNKNOWN
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-4129 OBJECT A
    Time of Closest Approach 2026-10-21T16:17:44+0000
    Collision Probability (Pc) 3.427829E-6
    Conjunction Distance (km) 1.826 km
    Relative Speed (km/s) 13.371 km/s
    Conjunction Risk Parameters R (Radial): -1.269 | I (In-track): 0.623 | C (Cross-track): -1.153
    Collision Risk Index (CRI) 0.46
    X Position (km) -4384.936 -4383.536
    Position Y (km) 302.332 301.24
    Position Z (km) -5249.417 -5248.993
    Velocity X (km/s) -2.568 5.82
    Velocity Y (km/s) -6.963 1.136
    Velocity Z (km/s) 1.745 -4.798

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4129 OBJECT A
    Semimajor Axis (a) 6840.905 km 6844.959 km
    Eccentricity (e) 0.000133 0.000944
    Inclination (i) 53.1593° 97.4072°
    RAAN 250.8249° 3.2028°
    Perigee Argument 100.2302° 236.8399°
    Mean Anomaly (M) 259.8851° 123.1938°
    Apogee 463.679 km 473.283 km
    Perigee 461.857 km 460.361 km
    Orbit Epoch 2026-10-19T06:46:25+0000 2026-10-19T20:59:47+0000

    STARLINK-4129 & OBJECT A Collision Probability (Pc) Trend

    STARLINK-4129 & OBJECT A Collision Probability (Pc) TrendNot Available

    STARLINK-4129 & OBJECT A Miss Distance (Miss Distance) Trend

    STARLINK-4129 & OBJECT A Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4129Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    OBJECT AMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4129Collision Probability Trend

    Object 1 Probability TrendNot Available

    OBJECT ACollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4129

    No nearby objects data