Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.699888E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T14:34:57+0800
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    1 Object 1

    AOE ID 62915
    NORAD ID 62915
    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-11555 FIREFLY ALPHA R/B
    Time of Closest Approach 2026-09-07T19:33:41+0000
    Collision Probability (Pc) 2.699888E-5
    Conjunction Distance (km) 0.933 km
    Relative Speed (km/s) 10.505 km/s
    Conjunction Risk Parameters R (Radial): -0.15 | I (In-track): -0.674 | C (Cross-track): 0.627
    Collision Risk Index (CRI) 0.64
    X Position (km) 3922.724 3923.092
    Position Y (km) -5001.905 -5002.178
    Position Z (km) -2220.576 -2219.764
    Velocity X (km/s) 5.68 -2.227
    Velocity Y (km/s) 2.417 -4.369
    Velocity Z (km/s) 4.597 5.931

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-11555 FIREFLY ALPHA R/B
    Semimajor Axis (a) 6734.605 km 6732.999 km
    Eccentricity (e) 0.000204 0.000435
    Inclination (i) 43.0023° 123.0879°
    RAAN 349.2676° 281.5089°
    Perigee Argument 267.7688° 12.9819°
    Mean Anomaly (M) 92.2946° 347.1360°
    Apogee 357.843 km 357.794 km
    Perigee 355.093 km 351.930 km
    Orbit Epoch 2026-09-04T15:24:14+0000 2026-09-04T19:54:31+0000

    STARLINK-11555 & FIREFLY ALPHA R/B Collision Probability (Pc) Trend

    STARLINK-11555 & FIREFLY ALPHA R/B Collision Probability (Pc) TrendNot Available

    STARLINK-11555 & FIREFLY ALPHA R/B Miss Distance (Miss Distance) Trend

    STARLINK-11555 & FIREFLY ALPHA R/B Miss Distance (Miss Distance) TrendNot Available

    STARLINK-11555Miss 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-11555Collision Probability Trend

    Object 1 Probability TrendNot Available

    FIREFLY ALPHA R/BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-11555

    No nearby objects data