Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.734691E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-29T16:29:03+0800
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    1 Object 1

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

    2 Object 2

    AOE ID 53683
    NORAD ID 53683
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HST STARLINK-4625
    Time of Closest Approach 2026-10-31T10:17:41+0000
    Collision Probability (Pc) 2.734691E-6
    Conjunction Distance (km) 1.841 km
    Relative Speed (km/s) 9.767 km/s
    Conjunction Risk Parameters R (Radial): -0.477 | I (In-track): -1.363 | C (Cross-track): -1.14
    Collision Risk Index (CRI) 0.44
    X Position (km) 6337.324 6338.339
    Position Y (km) -29.258 -28.319
    Position Z (km) 2580.616 2579.4
    Velocity X (km/s) 0.942 2.856
    Velocity Y (km/s) 7.245 -1.057
    Velocity Z (km/s) -2.226 -7.001

    Orbital Parameters 国际轨道数据源

    Parameter HST STARLINK-4625
    Semimajor Axis (a) 6847.676 km 6843.650 km
    Eccentricity (e) 0.000191 0.000157
    Inclination (i) 28.4737° 97.2839°
    RAAN 250.4520° 173.7739°
    Perigee Argument 186.0800° 102.6912°
    Mean Anomaly (M) 173.9774° 257.4506°
    Apogee 470.845 km 466.587 km
    Perigee 468.233 km 464.439 km
    Orbit Epoch 2026-10-28T05:08:21+0000 2026-10-28T09:34:06+0000

    HST & STARLINK-4625 Collision Probability (Pc) Trend

    HST & STARLINK-4625 Collision Probability (Pc) TrendNot Available

    HST & STARLINK-4625 Miss Distance (Miss Distance) Trend

    HST & STARLINK-4625 Miss Distance (Miss Distance) TrendNot Available

    HSTMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4625Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HSTCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4625Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HST

    No nearby objects data