Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    3.499531E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T08:56:01+0800
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    1 Object 1

    AOE ID 39475
    NORAD ID 39475
    Object Type ROCKET BODY
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 48436
    NORAD ID 48436
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter ATLAS 5 CENTAUR R/B STARLINK-2639
    Time of Closest Approach 2026-10-20T13:19:21+0000
    Collision Probability (Pc) 3.499531E-5
    Conjunction Distance (km) 0.831 km
    Relative Speed (km/s) 8.765 km/s
    Conjunction Risk Parameters R (Radial): -0.048 | I (In-track): 0.681 | C (Cross-track): -0.473
    Collision Risk Index (CRI) 0.66
    X Position (km) -4892.012 -4891.796
    Position Y (km) -4466.079 -4465.948
    Position Z (km) 1661.233 1662.024
    Velocity X (km/s) -1.485 4.271
    Velocity Y (km/s) 4.091 -2.497
    Velocity Z (km/s) 6.361 5.827

    Orbital Parameters 国际轨道数据源

    Parameter ATLAS 5 CENTAUR R/B STARLINK-2639
    Semimajor Axis (a) 6947.729 km 6837.565 km
    Eccentricity (e) 0.018480 0.000132
    Inclination (i) 120.4300° 53.1591°
    RAAN 226.1184° 214.9374°
    Perigee Argument 38.7378° 65.5447°
    Mean Anomaly (M) 322.6780° 277.5014°
    Apogee 697.985 km 460.330 km
    Perigee 441.199 km 458.526 km
    Orbit Epoch 2026-10-19T06:50:25+0000 2026-10-19T20:00:04+0000

    ATLAS 5 CENTAUR R/B & STARLINK-2639 Collision Probability (Pc) Trend

    ATLAS 5 CENTAUR R/B & STARLINK-2639 Collision Probability (Pc) TrendNot Available

    ATLAS 5 CENTAUR R/B & STARLINK-2639 Miss Distance (Miss Distance) Trend

    ATLAS 5 CENTAUR R/B & STARLINK-2639 Miss Distance (Miss Distance) TrendNot Available

    ATLAS 5 CENTAUR R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-2639Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ATLAS 5 CENTAUR R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-2639Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ATLAS 5 CENTAUR R/B

    No nearby objects data