Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.407358E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T05:18:59+0800
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    1 Object 1

    AOE ID 10121
    NORAD ID 10121
    Object Type ROCKET BODY
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 42805
    NORAD ID 42805
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter SL-8 R/B IRIDIUM 120
    Time of Closest Approach 2026-09-16T15:39:30+0000
    Collision Probability (Pc) 2.407358E-6
    Conjunction Distance (km) 2.081 km
    Relative Speed (km/s) 13.171 km/s
    Conjunction Risk Parameters R (Radial): -1.86 | I (In-track): 0.443 | C (Cross-track): -0.821
    Collision Risk Index (CRI) 0.43
    X Position (km) -228.074 -228.921
    Position Y (km) 2699.087 2698.579
    Position Z (km) 6616.883 6615.051
    Velocity X (km/s) -4.996 -1.813
    Velocity Y (km/s) -5.185 6.687
    Velocity Z (km/s) 1.947 -2.784

    Orbital Parameters 国际轨道数据源

    Parameter SL-8 R/B IRIDIUM 120
    Semimajor Axis (a) 7145.136 km 7155.805 km
    Eccentricity (e) 0.001933 0.000204
    Inclination (i) 74.0455° 86.3912°
    RAAN 52.6989° 284.1925°
    Perigee Argument 289.2369° 90.6438°
    Mean Anomaly (M) 70.6693° 269.4991°
    Apogee 780.812 km 779.125 km
    Perigee 753.186 km 776.211 km
    Orbit Epoch 2026-09-15T10:55:07+0000 2026-09-15T12:20:51+0000

    SL-8 R/B & IRIDIUM 120 Collision Probability (Pc) Trend

    SL-8 R/B & IRIDIUM 120 Collision Probability (Pc) TrendNot Available

    SL-8 R/B & IRIDIUM 120 Miss Distance (Miss Distance) Trend

    SL-8 R/B & IRIDIUM 120 Miss Distance (Miss Distance) TrendNot Available

    SL-8 R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 120Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SL-8 R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 120Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SL-8 R/B

    No nearby objects data