Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.859196E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T04:39:29+0800
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    1 Object 1

    Name ALICE
    AOE ID 39467
    NORAD ID 39467
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 48837
    NORAD ID 48837
    Object Type DEBRIS
    Country
    US US

    Conjunction Constraints

    Parameter ALICE FALCON 9 DEB
    Time of Closest Approach 2026-10-20T23:26:12+0000
    Collision Probability (Pc) 1.859196E-6
    Conjunction Distance (km) 2.441 km
    Relative Speed (km/s) 15.134 km/s
    Conjunction Risk Parameters R (Radial): -0.36 | I (In-track): -0.166 | C (Cross-track): -2.408
    Collision Risk Index (CRI) 0.4
    X Position (km) -4634.81 -4636.348
    Position Y (km) -3641.127 -3639.999
    Position Z (km) -3619.085 -3617.562
    Velocity X (km/s) -0.365 1.095
    Velocity Y (km/s) 5.453 -5.946
    Velocity Z (km/s) -5.265 4.582

    Orbital Parameters 国际轨道数据源

    Parameter ALICE FALCON 9 DEB
    Semimajor Axis (a) 6911.211 km 6903.676 km
    Eccentricity (e) 0.016520 0.001244
    Inclination (i) 120.4609° 53.0258°
    RAAN 56.6642° 248.6405°
    Perigee Argument 125.2569° 145.8100°
    Mean Anomaly (M) 236.4079° 214.3695°
    Apogee 647.245 km 534.127 km
    Perigee 418.903 km 516.951 km
    Orbit Epoch 2026-10-20T06:36:50+0000 2026-10-20T07:46:09+0000

    ALICE & FALCON 9 DEB Collision Probability (Pc) Trend

    ALICE & FALCON 9 DEB Collision Probability (Pc) TrendNot Available

    ALICE & FALCON 9 DEB Miss Distance (Miss Distance) Trend

    ALICE & FALCON 9 DEB Miss Distance (Miss Distance) TrendNot Available

    ALICEMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FALCON 9 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ALICECollision Probability Trend

    Object 1 Probability TrendNot Available

    FALCON 9 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ALICE

    No nearby objects data