Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    6.109676E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-01T16:17:05+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 47401
    NORAD ID 47401
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter ALICE STARLINK-2123
    Time of Closest Approach 2026-09-01T09:12:51+0000
    Collision Probability (Pc) 6.109676E-6
    Conjunction Distance (km) 1.455 km
    Relative Speed (km/s) 11.129 km/s
    Conjunction Risk Parameters R (Radial): 1.42 | I (In-track): -0.225 | C (Cross-track): -0.223
    Collision Risk Index (CRI) 0.51
    X Position (km) 901.784 901.953
    Position Y (km) 5149.059 5149.922
    Position Z (km) 4413.948 4415.106
    Velocity X (km/s) 5.668 -5.375
    Velocity Y (km/s) 2.855 4.045
    Velocity Z (km/s) -4.311 -3.61

    Orbital Parameters 国际轨道数据源

    Parameter ALICE STARLINK-2123
    Semimajor Axis (a) 6914.373 km 6848.879 km
    Eccentricity (e) 0.017034 0.000115
    Inclination (i) 120.4628° 53.1610°
    RAAN 227.9062° 303.7042°
    Perigee Argument 75.2839° 72.9458°
    Mean Anomaly (M) 286.7042° 287.1669°
    Apogee 654.017 km 471.527 km
    Perigee 418.455 km 469.957 km
    Orbit Epoch 2026-08-31T18:20:53+0000 2026-08-31T10:44:30+0000

    ALICE & STARLINK-2123 Collision Probability (Pc) Trend

    ALICE & STARLINK-2123 Collision Probability (Pc) TrendNot Available

    ALICE & STARLINK-2123 Miss Distance (Miss Distance) Trend

    ALICE & STARLINK-2123 Miss Distance (Miss Distance) TrendNot Available

    ALICEMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-2123Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ALICECollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-2123Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ALICE

    No nearby objects data