Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.669833E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-25T03:55:41+0800
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    1 Object 1

    AOE ID 24870
    NORAD ID 24870
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    Name ENVISAT
    AOE ID 27386
    NORAD ID 27386
    Object Type PAYLOAD
    Country
    ESA ESA

    Conjunction Constraints

    Parameter IRIDIUM 17 ENVISAT
    Time of Closest Approach 2026-10-25T13:14:21+0000
    Collision Probability (Pc) 1.669833E-6
    Conjunction Distance (km) 2.525 km
    Relative Speed (km/s) 14.016 km/s
    Conjunction Risk Parameters R (Radial): -2.351 | I (In-track): 0.33 | C (Cross-track): -0.857
    Collision Risk Index (CRI) 0.39
    X Position (km) -1163.281 -1163.569
    Position Y (km) -82.774 -82.127
    Position Z (km) 7037.599 7035.175
    Velocity X (km/s) -6.586 2.832
    Velocity Y (km/s) -3.348 6.896
    Velocity Z (km/s) -1.127 0.548

    Orbital Parameters 国际轨道数据源

    Parameter IRIDIUM 17 ENVISAT
    Semimajor Axis (a) 7142.398 km 7139.645 km
    Eccentricity (e) 0.000247 0.000140
    Inclination (i) 86.3995° 98.3995°
    RAAN 26.9649° 245.8421°
    Perigee Argument 134.9110° 84.9129°
    Mean Anomaly (M) 225.2289° 75.8163°
    Apogee 766.027 km 762.505 km
    Perigee 762.495 km 760.511 km
    Orbit Epoch 2026-10-24T05:03:25+0000 2026-10-24T07:33:02+0000

    IRIDIUM 17 & ENVISAT Collision Probability (Pc) Trend

    IRIDIUM 17 & ENVISAT Collision Probability (Pc) TrendNot Available

    IRIDIUM 17 & ENVISAT Miss Distance (Miss Distance) Trend

    IRIDIUM 17 & ENVISAT Miss Distance (Miss Distance) TrendNot Available

    IRIDIUM 17Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    ENVISATMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRIDIUM 17Collision Probability Trend

    Object 1 Probability TrendNot Available

    ENVISATCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRIDIUM 17

    No nearby objects data