Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    3.571743E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T17:29:43+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    Name HST
    AOE ID 20580
    NORAD ID 20580
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 69429
    NORAD ID 69429
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HST STARLINK-37857
    Time of Closest Approach 2026-10-21T04:28:56+0000
    Collision Probability (Pc) 3.571743E-6
    Conjunction Distance (km) 1.794 km
    Relative Speed (km/s) 13.191 km/s
    Conjunction Risk Parameters R (Radial): 0.978 | I (In-track): -0.759 | C (Cross-track): 1.298
    Collision Risk Index (CRI) 0.46
    X Position (km) 5985.169 5985.295
    Position Y (km) -2477.591 -2478.927
    Position Z (km) 2206.049 2207.238
    Velocity X (km/s) 1.864 1.872
    Velocity Y (km/s) 6.904 -1.882
    Velocity Z (km/s) 2.681 -7.157

    Orbital Parameters 国际轨道数据源

    Parameter HST STARLINK-37857
    Semimajor Axis (a) 6847.955 km 6843.766 km
    Eccentricity (e) 0.000216 0.000054
    Inclination (i) 28.4737° 97.2881°
    RAAN 308.4466° 153.4299°
    Perigee Argument 102.7271° 71.2708°
    Mean Anomaly (M) 257.3567° 288.8593°
    Apogee 471.298 km 466.002 km
    Perigee 468.338 km 465.256 km
    Orbit Epoch 2026-10-19T17:54:10+0000 2026-10-19T14:11:45+0000

    HST & STARLINK-37857 Collision Probability (Pc) Trend

    HST & STARLINK-37857 Collision Probability (Pc) TrendNot Available

    HST & STARLINK-37857 Miss Distance (Miss Distance) Trend

    HST & STARLINK-37857 Miss Distance (Miss Distance) TrendNot Available

    HSTMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-37857Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HSTCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-37857Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HST

    No nearby objects data