Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    1.068195E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-06T12:50:42+0800
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    1 Object 1

    AOE ID 53731
    NORAD ID 53731
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    Name SELENE
    AOE ID 69020
    NORAD ID 69020
    Object Type PAYLOAD
    Country
    GR GR

    Conjunction Constraints

    Parameter STARLINK-4636 SELENE
    Time of Closest Approach 2026-09-08T02:38:02+0000
    Collision Probability (Pc) 1.068195E-5
    Conjunction Distance (km) 1.08 km
    Relative Speed (km/s) 5.73 km/s
    Conjunction Risk Parameters R (Radial): 0.525 | I (In-track): -0.875 | C (Cross-track): -0.35
    Collision Risk Index (CRI) 0.56
    X Position (km) -5769.356 -5769.693
    Position Y (km) 3742.396 3742.905
    Position Z (km) 272.399 271.509
    Velocity X (km/s) -2.274 0.793
    Velocity Y (km/s) -3.963 0.653
    Velocity Z (km/s) 6.092 7.544

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4636 SELENE
    Semimajor Axis (a) 6883.849 km 6882.086 km
    Eccentricity (e) 0.000329 0.000578
    Inclination (i) 53.2077° 97.3923°
    RAAN 156.1498° 145.1913°
    Perigee Argument 16.1982° 68.6741°
    Mean Anomaly (M) 343.9119° 291.5111°
    Apogee 507.978 km 507.929 km
    Perigee 503.446 km 499.969 km
    Orbit Epoch 2026-09-05T17:48:47+0000 2026-09-05T22:30:26+0000

    STARLINK-4636 & SELENE Collision Probability (Pc) Trend

    STARLINK-4636 & SELENE Collision Probability (Pc) TrendNot Available

    STARLINK-4636 & SELENE Miss Distance (Miss Distance) Trend

    STARLINK-4636 & SELENE Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4636Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SELENEMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4636Collision Probability Trend

    Object 1 Probability TrendNot Available

    SELENECollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4636

    No nearby objects data