Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.845902E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T22:56:03+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 57966
    NORAD ID 57966
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter ATLAS 5 CENTAUR R/B STARLINK-30521
    Time of Closest Approach 2026-09-12T16:08:09+0000
    Collision Probability (Pc) 1.845902E-6
    Conjunction Distance (km) 2.318 km
    Relative Speed (km/s) 12.634 km/s
    Conjunction Risk Parameters R (Radial): -1.178 | I (In-track): -1.118 | C (Cross-track): 1.653
    Collision Risk Index (CRI) 0.4
    X Position (km) 2613.397 2613.999
    Position Y (km) 4632.304 4632.311
    Position Z (km) 4327.456 4325.218
    Velocity X (km/s) 2.597 -7.052
    Velocity Y (km/s) -5.596 2.135
    Velocity Z (km/s) 4.565 1.971

    Orbital Parameters 国际轨道数据源

    Parameter ATLAS 5 CENTAUR R/B STARLINK-30521
    Semimajor Axis (a) 6949.155 km 6861.221 km
    Eccentricity (e) 0.017975 0.000097
    Inclination (i) 120.4318° 43.0020°
    RAAN 82.8755° 16.8682°
    Perigee Argument 359.4055° 258.1096°
    Mean Anomaly (M) 0.6779° 101.9647°
    Apogee 695.929 km 483.752 km
    Perigee 446.107 km 482.416 km
    Orbit Epoch 2026-09-10T23:54:20+0000 2026-09-09T15:39:15+0000

    ATLAS 5 CENTAUR R/B & STARLINK-30521 Collision Probability (Pc) Trend

    ATLAS 5 CENTAUR R/B & STARLINK-30521 Collision Probability (Pc) TrendNot Available

    ATLAS 5 CENTAUR R/B & STARLINK-30521 Miss Distance (Miss Distance) Trend

    ATLAS 5 CENTAUR R/B & STARLINK-30521 Miss Distance (Miss Distance) TrendNot Available

    ATLAS 5 CENTAUR R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-30521Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ATLAS 5 CENTAUR R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-30521Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ATLAS 5 CENTAUR R/B

    No nearby objects data