Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.771946E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T11:09:10+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 66253
    NORAD ID 66253
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter HST STARLINK-35486
    Time of Closest Approach 2026-09-04T22:25:42+0000
    Collision Probability (Pc) 2.771946E-6
    Conjunction Distance (km) 1.708 km
    Relative Speed (km/s) 7.171 km/s
    Conjunction Risk Parameters R (Radial): -0.982 | I (In-track): -1.233 | C (Cross-track): -0.655
    Collision Risk Index (CRI) 0.44
    X Position (km) 5118.066 5119.693
    Position Y (km) -3287.376 -3286.856
    Position Z (km) 3136.897 3136.93
    Velocity X (km/s) 3.65 4.962
    Velocity Y (km/s) 6.633 2.934
    Velocity Z (km/s) 0.995 -5.006

    Orbital Parameters 国际轨道数据源

    Parameter HST STARLINK-35486
    Semimajor Axis (a) 6849.371 km 6848.846 km
    Eccentricity (e) 0.000149 0.000158
    Inclination (i) 28.4726° 53.1592°
    RAAN 272.6734° 181.1025°
    Perigee Argument 278.0085° 69.6637°
    Mean Anomaly (M) 82.0342° 290.4534°
    Apogee 472.256 km 471.794 km
    Perigee 470.212 km 469.624 km
    Orbit Epoch 2026-09-02T09:06:54+0000 2026-09-02T13:25:24+0000

    HST & STARLINK-35486 Collision Probability (Pc) Trend

    HST & STARLINK-35486 Collision Probability (Pc) TrendNot Available

    HST & STARLINK-35486 Miss Distance (Miss Distance) Trend

    HST & STARLINK-35486 Miss Distance (Miss Distance) TrendNot Available

    HSTMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-35486Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HSTCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-35486Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HST

    No nearby objects data