Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.441392E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-29T02:39:38+0800
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    1 Object 1

    AOE ID 60210
    NORAD ID 60210
    Object Type ROCKET BODY
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 62278
    NORAD ID 62278
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter FIREFLY ALPHA R/B STARLINK-11487
    Time of Closest Approach 2026-10-28T23:59:46+0000
    Collision Probability (Pc) 2.441392E-6
    Conjunction Distance (km) 1.965 km
    Relative Speed (km/s) 10.708 km/s
    Conjunction Risk Parameters R (Radial): -0.024 | I (In-track): -1.405 | C (Cross-track): -1.371
    Collision Risk Index (CRI) 0.43
    X Position (km) 4818.324 4819.028
    Position Y (km) -1397.479 -1398.845
    Position Z (km) -4474.456 -4473.234
    Velocity X (km/s) -5.203 1.125
    Velocity Y (km/s) 0.168 7.529
    Velocity Z (km/s) -5.659 -1.142

    Orbital Parameters 国际轨道数据源

    Parameter FIREFLY ALPHA R/B STARLINK-11487
    Semimajor Axis (a) 6706.122 km 6736.233 km
    Eccentricity (e) 0.001492 0.000261
    Inclination (i) 97.1842° 43.0006°
    RAAN 169.1879° 98.8109°
    Perigee Argument 45.4835° 276.0084°
    Mean Anomaly (M) 314.7649° 342.8577°
    Apogee 337.992 km 359.852 km
    Perigee 317.978 km 356.340 km
    Orbit Epoch 2026-10-27T22:45:17+0000 2026-10-27T16:00:03+0000

    FIREFLY ALPHA R/B & STARLINK-11487 Collision Probability (Pc) Trend

    FIREFLY ALPHA R/B & STARLINK-11487 Collision Probability (Pc) TrendNot Available

    FIREFLY ALPHA R/B & STARLINK-11487 Miss Distance (Miss Distance) Trend

    FIREFLY ALPHA R/B & STARLINK-11487 Miss Distance (Miss Distance) TrendNot Available

    FIREFLY ALPHA R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-11487Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    FIREFLY ALPHA R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-11487Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with FIREFLY ALPHA R/B

    No nearby objects data