Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.336291E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T20:51:51+0800
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    1 Object 1

    AOE ID 53847
    NORAD ID 53847
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 69539
    NORAD ID 69539
    Object Type UNKNOWN
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-4777 OBJECT B
    Time of Closest Approach 2026-09-14T05:49:08+0000
    Collision Probability (Pc) 1.336291E-6
    Conjunction Distance (km) 2.98 km
    Relative Speed (km/s) 14.531 km/s
    Conjunction Risk Parameters R (Radial): -2.758 | I (In-track): 0.321 | C (Cross-track): 1.08
    Collision Risk Index (CRI) 0.38
    X Position (km) 4905.219 4903.675
    Position Y (km) -3632.802 -3630.402
    Position Z (km) 3246.981 3246.125
    Velocity X (km/s) 5.18 -3.521
    Velocity Y (km/s) 2.582 1.174
    Velocity Z (km/s) -4.919 6.631

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4777 OBJECT B
    Semimajor Axis (a) 6917.911 km 6918.281 km
    Eccentricity (e) 0.000168 0.001530
    Inclination (i) 53.1614° 97.6915°
    RAAN 176.3299° 325.5445°
    Perigee Argument 87.0402° 339.9288°
    Mean Anomaly (M) 273.0781° 20.1337°
    Apogee 540.934 km 550.728 km
    Perigee 538.614 km 529.560 km
    Orbit Epoch 2026-09-12T03:54:04+0000 2026-09-12T04:20:59+0000

    STARLINK-4777 & OBJECT B Collision Probability (Pc) Trend

    STARLINK-4777 & OBJECT B Collision Probability (Pc) TrendNot Available

    STARLINK-4777 & OBJECT B Miss Distance (Miss Distance) Trend

    STARLINK-4777 & OBJECT B Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4777Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    OBJECT BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4777Collision Probability Trend

    Object 1 Probability TrendNot Available

    OBJECT BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4777

    No nearby objects data