Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.220482E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T15:01:00+0800
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    1 Object 1

    AOE ID 53409
    NORAD ID 53409
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 63381
    NORAD ID 63381
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4490 STARLINK-33643
    Time of Closest Approach 2026-10-21T18:22:55+0000
    Collision Probability (Pc) 2.220482E-6
    Conjunction Distance (km) 1.833 km
    Relative Speed (km/s) 6.898 km/s
    Conjunction Risk Parameters R (Radial): 0.914 | I (In-track): -1.416 | C (Cross-track): -0.72
    Collision Risk Index (CRI) 0.42
    X Position (km) -4211.309 -4210.109
    Position Y (km) -1835.808 -1837.019
    Position Z (km) 5059.041 5058.367
    Velocity X (km/s) 5.068 0.383
    Velocity Y (km/s) -5.226 -7.27
    Velocity Z (km/s) 2.316 -2.316

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4490 STARLINK-33643
    Semimajor Axis (a) 6840.882 km 6840.848 km
    Eccentricity (e) 0.000139 0.000210
    Inclination (i) 53.1570° 53.1564°
    RAAN 159.2227° 90.2945°
    Perigee Argument 94.7920° 91.1208°
    Mean Anomaly (M) 265.3241° 269.0035°
    Apogee 463.697 km 464.148 km
    Perigee 461.793 km 461.274 km
    Orbit Epoch 2026-10-19T08:14:51+0000 2026-10-19T09:37:11+0000

    STARLINK-4490 & STARLINK-33643 Collision Probability (Pc) Trend

    STARLINK-4490 & STARLINK-33643 Collision Probability (Pc) TrendNot Available

    STARLINK-4490 & STARLINK-33643 Miss Distance (Miss Distance) Trend

    STARLINK-4490 & STARLINK-33643 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4490Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-33643Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4490Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-33643Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4490

    No nearby objects data