Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.616655E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T12:15:13+0800
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    1 Object 1

    AOE ID 62593
    NORAD ID 62593
    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-11413 FIREFLY ALPHA R/B
    Time of Closest Approach 2026-09-03T21:13:34+0000
    Collision Probability (Pc) 1.616655E-6
    Conjunction Distance (km) 2.629 km
    Relative Speed (km/s) 14.878 km/s
    Conjunction Risk Parameters R (Radial): -2.421 | I (In-track): 0.274 | C (Cross-track): 0.984
    Collision Risk Index (CRI) 0.39
    X Position (km) -2342.001 -2340.447
    Position Y (km) -4489.645 -4487.738
    Position Z (km) 4430.733 4429.81
    Velocity X (km/s) 6.084 -3.339
    Velocity Y (km/s) -4.517 5.682
    Velocity Z (km/s) -1.358 3.984

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-11413 FIREFLY ALPHA R/B
    Semimajor Axis (a) 6734.427 km 6733.914 km
    Eccentricity (e) 0.000261 0.000382
    Inclination (i) 42.9993° 123.0877°
    RAAN 140.1203° 267.7705°
    Perigee Argument 283.8552° 14.6112°
    Mean Anomaly (M) 76.2026° 345.5065°
    Apogee 358.047 km 358.351 km
    Perigee 354.533 km 353.203 km
    Orbit Epoch 2026-09-02T14:16:01+0000 2026-09-01T18:37:03+0000

    STARLINK-11413 & FIREFLY ALPHA R/B Collision Probability (Pc) Trend

    STARLINK-11413 & FIREFLY ALPHA R/B Collision Probability (Pc) TrendNot Available

    STARLINK-11413 & FIREFLY ALPHA R/B Miss Distance (Miss Distance) Trend

    STARLINK-11413 & FIREFLY ALPHA R/B Miss Distance (Miss Distance) TrendNot Available

    STARLINK-11413Miss 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-11413Collision Probability Trend

    Object 1 Probability TrendNot Available

    FIREFLY ALPHA R/BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-11413

    No nearby objects data