Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.208611E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-28T21:35:09+0800
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    1 Object 1

    AOE ID 53548
    NORAD ID 53548
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 66762
    NORAD ID 66762
    Object Type PAYLOAD
    Country
    ESA ESA

    Conjunction Constraints

    Parameter STARLINK-4513 HYDROGNSS-1
    Time of Closest Approach 2026-10-29T04:36:24+0000
    Collision Probability (Pc) 2.208611E-5
    Conjunction Distance (km) 0.994 km
    Relative Speed (km/s) 10.728 km/s
    Conjunction Risk Parameters R (Radial): -0.047 | I (In-track): -0.708 | C (Cross-track): 0.695
    Collision Risk Index (CRI) 0.62
    X Position (km) -3976.066 -3975.614
    Position Y (km) -1476.731 -1475.982
    Position Z (km) 5454.999 5455.471
    Velocity X (km/s) 1.39 -6.054
    Velocity Y (km/s) -7.403 -0.546
    Velocity Z (km/s) -0.988 -4.548

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4513 HYDROGNSS-1
    Semimajor Axis (a) 6917.931 km 6908.066 km
    Eccentricity (e) 0.000152 0.000966
    Inclination (i) 53.1606° 97.4071°
    RAAN 101.6289° 9.4916°
    Perigee Argument 81.7113° 319.0503°
    Mean Anomaly (M) 278.4051° 41.0002°
    Apogee 540.849 km 536.604 km
    Perigee 538.739 km 523.254 km
    Orbit Epoch 2026-10-27T17:11:37+0000 2026-10-27T21:52:10+0000

    STARLINK-4513 & HYDROGNSS-1 Collision Probability (Pc) Trend

    STARLINK-4513 & HYDROGNSS-1 Collision Probability (Pc) TrendNot Available

    STARLINK-4513 & HYDROGNSS-1 Miss Distance (Miss Distance) Trend

    STARLINK-4513 & HYDROGNSS-1 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4513Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HYDROGNSS-1Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4513Collision Probability Trend

    Object 1 Probability TrendNot Available

    HYDROGNSS-1Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4513

    No nearby objects data