Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.333835E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-29T01:05:17+0800
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    1 Object 1

    AOE ID 53531
    NORAD ID 53531
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 62386
    NORAD ID 62386
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4487 TOMORROW-S4
    Time of Closest Approach 2026-10-29T06:46:29+0000
    Collision Probability (Pc) 1.333835E-6
    Conjunction Distance (km) 2.699 km
    Relative Speed (km/s) 11.484 km/s
    Conjunction Risk Parameters R (Radial): 2.653 | I (In-track): -0.321 | C (Cross-track): 0.374
    Collision Risk Index (CRI) 0.38
    X Position (km) -230.006 -229.603
    Position Y (km) 6803.99 6806.646
    Position Z (km) 743.462 743.719
    Velocity X (km/s) -4.577 -5.445
    Velocity Y (km/s) -0.824 0.408
    Velocity Z (km/s) 6.053 -5.332

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4487 TOMORROW-S4
    Semimajor Axis (a) 6848.935 km 6851.951 km
    Eccentricity (e) 0.000114 0.000322
    Inclination (i) 53.1580° 44.9821°
    RAAN 93.5997° 286.9775°
    Perigee Argument 73.3757° 73.1414°
    Mean Anomaly (M) 320.0250° 286.9824°
    Apogee 471.579 km 476.024 km
    Perigee 470.017 km 471.604 km
    Orbit Epoch 2026-10-27T22:00:02+0000 2026-10-27T16:26:26+0000

    STARLINK-4487 & TOMORROW-S4 Collision Probability (Pc) Trend

    STARLINK-4487 & TOMORROW-S4 Collision Probability (Pc) TrendNot Available

    STARLINK-4487 & TOMORROW-S4 Miss Distance (Miss Distance) Trend

    STARLINK-4487 & TOMORROW-S4 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4487Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    TOMORROW-S4Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4487Collision Probability Trend

    Object 1 Probability TrendNot Available

    TOMORROW-S4Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4487

    No nearby objects data