Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.749558E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T04:42:50+0800
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    1 Object 1

    AOE ID 4954
    NORAD ID 4954
    Object Type ROCKET BODY
    Country
    US US
    VS

    2 Object 2

    AOE ID 43576
    NORAD ID 43576
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter THOR BURNER 2 R/B IRIDIUM 156
    Time of Closest Approach 2026-09-17T23:53:04+0000
    Collision Probability (Pc) 1.749558E-6
    Conjunction Distance (km) 2.284 km
    Relative Speed (km/s) 10.985 km/s
    Conjunction Risk Parameters R (Radial): -0.077 | I (In-track): 1.543 | C (Cross-track): -1.681
    Collision Risk Index (CRI) 0.4
    X Position (km) 816.316 815.361
    Position Y (km) 732.882 730.823
    Position Z (km) 7062.305 7062.55
    Velocity X (km/s) 2.872 -7.055
    Velocity Y (km/s) -6.87 -2.212
    Velocity Z (km/s) 0.4 1.041

    Orbital Parameters 国际轨道数据源

    Parameter THOR BURNER 2 R/B IRIDIUM 156
    Semimajor Axis (a) 7137.298 km 7155.807 km
    Eccentricity (e) 0.003573 0.000215
    Inclination (i) 98.3159° 86.4003°
    RAAN 109.6566° 19.2029°
    Perigee Argument 322.6168° 90.0809°
    Mean Anomaly (M) 37.2536° 270.0633°
    Apogee 784.662 km 779.207 km
    Perigee 733.660 km 776.133 km
    Orbit Epoch 2026-09-15T08:06:11+0000 2026-09-14T21:49:42+0000

    THOR BURNER 2 R/B & IRIDIUM 156 Collision Probability (Pc) Trend

    THOR BURNER 2 R/B & IRIDIUM 156 Collision Probability (Pc) TrendNot Available

    THOR BURNER 2 R/B & IRIDIUM 156 Miss Distance (Miss Distance) Trend

    THOR BURNER 2 R/B & IRIDIUM 156 Miss Distance (Miss Distance) TrendNot Available

    THOR BURNER 2 R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 156Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    THOR BURNER 2 R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 156Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with THOR BURNER 2 R/B

    No nearby objects data