Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.642716E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T07:38:02+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 45074
    NORAD ID 45074
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter ALICE STARLINK-1172
    Time of Closest Approach 2026-09-16T09:49:35+0000
    Collision Probability (Pc) 1.642716E-6
    Conjunction Distance (km) 2.614 km
    Relative Speed (km/s) 15.053 km/s
    Conjunction Risk Parameters R (Radial): 1.501 | I (In-track): 0.44 | C (Cross-track): -2.094
    Collision Risk Index (CRI) 0.39
    X Position (km) -3827.617 -3825.013
    Position Y (km) 1590.263 1590.048
    Position Z (km) 5387.991 5388.011
    Velocity X (km/s) -0.702 -1.906
    Velocity Y (km/s) 7.243 -7.373
    Velocity Z (km/s) -2.571 0.819

    Orbital Parameters 国际轨道数据源

    Parameter ALICE STARLINK-1172
    Semimajor Axis (a) 6913.656 km 6804.743 km
    Eccentricity (e) 0.016988 0.000236
    Inclination (i) 120.4628° 53.1495°
    RAAN 274.0751° 93.7437°
    Perigee Argument 87.5675° 138.8076°
    Mean Anomaly (M) 274.4831° 221.3110°
    Apogee 652.969 km 428.212 km
    Perigee 418.069 km 425.000 km
    Orbit Epoch 2026-09-12T21:07:56+0000 2026-09-13T13:14:21+0000

    ALICE & STARLINK-1172 Collision Probability (Pc) Trend

    ALICE & STARLINK-1172 Collision Probability (Pc) TrendNot Available

    ALICE & STARLINK-1172 Miss Distance (Miss Distance) Trend

    ALICE & STARLINK-1172 Miss Distance (Miss Distance) TrendNot Available

    ALICEMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-1172Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ALICECollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-1172Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ALICE

    No nearby objects data