Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    7.424313E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-24T22:25:40+0800
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    1 Object 1

    AOE ID 39270
    NORAD ID 39270
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 53553
    NORAD ID 53553
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter POPACS 3 STARLINK-4501
    Time of Closest Approach 2026-10-25T05:43:53+0000
    Collision Probability (Pc) 7.424313E-7
    Conjunction Distance (km) 2.878 km
    Relative Speed (km/s) 4.691 km/s
    Conjunction Risk Parameters R (Radial): -1.385 | I (In-track): 2.444 | C (Cross-track): 0.623
    Collision Risk Index (CRI) 0.32
    X Position (km) 824.814 826.14
    Position Y (km) 5648.292 5648.035
    Position Z (km) -3914.499 -3917.039
    Velocity X (km/s) -0.869 -5.032
    Velocity Y (km/s) 4.108 3.711
    Velocity Z (km/s) 6.421 4.295

    Orbital Parameters 国际轨道数据源

    Parameter POPACS 3 STARLINK-4501
    Semimajor Axis (a) 7077.698 km 6917.900 km
    Eccentricity (e) 0.054428 0.000156
    Inclination (i) 80.9962° 53.1600°
    RAAN 89.1221° 118.5592°
    Perigee Argument 36.4405° 93.6548°
    Mean Anomaly (M) 327.2571° 266.4622°
    Apogee 1084.786 km 540.842 km
    Perigee 314.336 km 538.684 km
    Orbit Epoch 2026-10-24T03:31:46+0000 2026-10-23T22:08:06+0000

    POPACS 3 & STARLINK-4501 Collision Probability (Pc) Trend

    POPACS 3 & STARLINK-4501 Collision Probability (Pc) TrendNot Available

    POPACS 3 & STARLINK-4501 Miss Distance (Miss Distance) Trend

    POPACS 3 & STARLINK-4501 Miss Distance (Miss Distance) TrendNot Available

    POPACS 3Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4501Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    POPACS 3Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4501Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with POPACS 3

    No nearby objects data