Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.900599E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T23:17:57+0800
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    1 Object 1

    AOE ID 51718
    NORAD ID 51718
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 59881
    NORAD ID 59881
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3546 PREFIRE-2
    Time of Closest Approach 2026-09-05T07:11:40+0000
    Collision Probability (Pc) 2.900599E-6
    Conjunction Distance (km) 1.937 km
    Relative Speed (km/s) 13.252 km/s
    Conjunction Risk Parameters R (Radial): 1.898 | I (In-track): 0.198 | C (Cross-track): -0.329
    Collision Risk Index (CRI) 0.44
    X Position (km) -1656.18 -1655.386
    Position Y (km) 4049.838 4048.642
    Position Z (km) -5311.38 -5310.081
    Velocity X (km/s) -5.894 -0.75
    Velocity Y (km/s) -4.525 5.907
    Velocity Z (km/s) -1.613 4.737

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3546 PREFIRE-2
    Semimajor Axis (a) 6874.089 km 6879.391 km
    Eccentricity (e) 0.000423 0.001042
    Inclination (i) 53.1877° 97.3995°
    RAAN 235.8067° 101.9416°
    Perigee Argument 65.6566° 293.6428°
    Mean Anomaly (M) 294.4874° 66.3714°
    Apogee 498.862 km 508.419 km
    Perigee 493.042 km 494.089 km
    Orbit Epoch 2026-09-03T08:25:02+0000 2026-09-04T01:25:46+0000

    STARLINK-3546 & PREFIRE-2 Collision Probability (Pc) Trend

    STARLINK-3546 & PREFIRE-2 Collision Probability (Pc) TrendNot Available

    STARLINK-3546 & PREFIRE-2 Miss Distance (Miss Distance) Trend

    STARLINK-3546 & PREFIRE-2 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3546Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    PREFIRE-2Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3546Collision Probability Trend

    Object 1 Probability TrendNot Available

    PREFIRE-2Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3546

    No nearby objects data