Conjunction Event Detail

    ⚠
    High Risk
    High collision probability. Maneuver recommended for primary asset.
    1.058719E-4
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-29T07:51:19+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 48865
    NORAD ID 48865
    Object Type PAYLOAD
    Country
    CIS CIS

    Conjunction Constraints

    Parameter HST COSMOS 2550
    Time of Closest Approach 2026-10-30T22:00:18+0000
    Collision Probability (Pc) 1.058719E-4
    Conjunction Distance (km) 0.61 km
    Relative Speed (km/s) 11.314 km/s
    Conjunction Risk Parameters R (Radial): 0.284 | I (In-track): 0.362 | C (Cross-track): 0.401
    Collision Risk Index (CRI) 0.75
    X Position (km) 4416.084 4415.876
    Position Y (km) 5227.705 5228.247
    Position Z (km) 138.266 138.451
    Velocity X (km/s) -5.079 -2.357
    Velocity Y (km/s) 4.391 1.803
    Velocity Z (km/s) -3.639 7.033

    Orbital Parameters 国际轨道数据源

    Parameter HST COSMOS 2550
    Semimajor Axis (a) 6847.676 km 6842.549 km
    Eccentricity (e) 0.000191 0.000843
    Inclination (i) 28.4737° 67.1436°
    RAAN 250.4520° 57.0152°
    Perigee Argument 186.0800° 269.6730°
    Mean Anomaly (M) 173.9774° 90.3458°
    Apogee 470.845 km 470.183 km
    Perigee 468.233 km 458.641 km
    Orbit Epoch 2026-10-28T05:08:21+0000 2026-10-28T08:57:56+0000

    HST & COSMOS 2550 Collision Probability (Pc) Trend

    HST & COSMOS 2550 Collision Probability (Pc) TrendNot Available

    HST & COSMOS 2550 Miss Distance (Miss Distance) Trend

    HST & COSMOS 2550 Miss Distance (Miss Distance) TrendNot Available

    HSTMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    COSMOS 2550Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HSTCollision Probability Trend

    Object 1 Probability TrendNot Available

    COSMOS 2550Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HST

    No nearby objects data