Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.137875E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T11:04:38+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 53709
    NORAD ID 53709
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 69449
    NORAD ID 69449
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4685 STARLINK-37643
    Time of Closest Approach 2026-09-04T07:57:02+0000
    Collision Probability (Pc) 1.137875E-6
    Conjunction Distance (km) 2.61 km
    Relative Speed (km/s) 7.979 km/s
    Conjunction Risk Parameters R (Radial): -2.608 | I (In-track): -0.065 | C (Cross-track): -0.042
    Collision Risk Index (CRI) 0.36
    X Position (km) -1683.505 -1684.221
    Position Y (km) 4511.686 4513.38
    Position Z (km) -4862.199 -4864.051
    Velocity X (km/s) -7.081 -5.099
    Velocity Y (km/s) 0.383 -4.926
    Velocity Z (km/s) 2.809 -2.808

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4685 STARLINK-37643
    Semimajor Axis (a) 6837.874 km 6840.853 km
    Eccentricity (e) 0.000135 0.000124
    Inclination (i) 53.1620° 53.1580°
    RAAN 170.2723° 250.6035°
    Perigee Argument 84.5955° 106.1609°
    Mean Anomaly (M) 275.5202° 253.9530°
    Apogee 460.659 km 463.563 km
    Perigee 458.815 km 461.869 km
    Orbit Epoch 2026-09-02T01:32:41+0000 2026-09-02T08:00:03+0000

    STARLINK-4685 & STARLINK-37643 Collision Probability (Pc) Trend

    STARLINK-4685 & STARLINK-37643 Collision Probability (Pc) TrendNot Available

    STARLINK-4685 & STARLINK-37643 Miss Distance (Miss Distance) Trend

    STARLINK-4685 & STARLINK-37643 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4685Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-37643Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4685Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-37643Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4685

    No nearby objects data