Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    6.527482E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T16:41:49+0800
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    1 Object 1

    AOE ID 62410
    NORAD ID 62410
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 68128
    NORAD ID 68128
    Object Type ROCKET BODY
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-11493 FIREFLY ALPHA R/B
    Time of Closest Approach 2026-09-12T10:10:04+0000
    Collision Probability (Pc) 6.527482E-6
    Conjunction Distance (km) 1.521 km
    Relative Speed (km/s) 15.224 km/s
    Conjunction Risk Parameters R (Radial): -0.169 | I (In-track): 0.227 | C (Cross-track): -1.494
    Collision Risk Index (CRI) 0.51
    X Position (km) -5445.489 -5446.239
    Position Y (km) 2601.024 2600.22
    Position Z (km) 2980.175 2979.125
    Velocity X (km/s) -0.923 -0.43
    Velocity Y (km/s) -6.518 5.397
    Velocity Z (km/s) 3.992 -5.471

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-11493 FIREFLY ALPHA R/B
    Semimajor Axis (a) 6734.382 km 6730.577 km
    Eccentricity (e) 0.000254 0.000546
    Inclination (i) 43.0008° 123.0866°
    RAAN 127.1125° 313.8666°
    Perigee Argument 259.0507° 13.3408°
    Mean Anomaly (M) 101.0075° 346.7802°
    Apogee 357.958 km 356.117 km
    Perigee 354.532 km 348.763 km
    Orbit Epoch 2026-09-11T15:41:14+0000 2026-09-12T00:23:09+0000

    STARLINK-11493 & FIREFLY ALPHA R/B Collision Probability (Pc) Trend

    STARLINK-11493 & FIREFLY ALPHA R/B Collision Probability (Pc) TrendNot Available

    STARLINK-11493 & FIREFLY ALPHA R/B Miss Distance (Miss Distance) Trend

    STARLINK-11493 & FIREFLY ALPHA R/B Miss Distance (Miss Distance) TrendNot Available

    STARLINK-11493Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FIREFLY ALPHA R/BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-11493Collision Probability Trend

    Object 1 Probability TrendNot Available

    FIREFLY ALPHA R/BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-11493

    No nearby objects data