Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.395692E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T20:48:29+0800
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    1 Object 1

    AOE ID 8709
    NORAD ID 8709
    Object Type PAYLOAD
    Country
    JP JP
    VS

    2 Object 2

    AOE ID 19827
    NORAD ID 19827
    Object Type ROCKET BODY
    Country
    CIS CIS

    Conjunction Constraints

    Parameter UME 1 (ISS 1) SL-8 R/B
    Time of Closest Approach 2026-09-11T14:07:58+0000
    Collision Probability (Pc) 1.395692E-6
    Conjunction Distance (km) 2.736 km
    Relative Speed (km/s) 12.855 km/s
    Conjunction Risk Parameters R (Radial): 0.742 | I (In-track): 1.268 | C (Cross-track): -2.307
    Collision Risk Index (CRI) 0.38
    X Position (km) 3691.03 3692.178
    Position Y (km) -274.131 -271.666
    Position Z (km) 6374.479 6374.778
    Velocity X (km/s) -4.204 6.269
    Velocity Y (km/s) 5.413 1.338
    Velocity Z (km/s) 2.655 -3.585

    Orbital Parameters 国际轨道数据源

    Parameter UME 1 (ISS 1) SL-8 R/B
    Semimajor Axis (a) 7371.429 km 7361.968 km
    Eccentricity (e) 0.001137 0.003005
    Inclination (i) 69.6753° 82.9542°
    RAAN 317.0150° 188.2955°
    Perigee Argument 204.4672° 255.2816°
    Mean Anomaly (M) 180.6606° 269.5892°
    Apogee 1001.674 km 1005.956 km
    Perigee 984.910 km 961.706 km
    Orbit Epoch 2026-09-11T03:25:39+0000 2026-09-11T07:21:50+0000

    UME 1 (ISS 1) & SL-8 R/B Collision Probability (Pc) Trend

    UME 1 (ISS 1) & SL-8 R/B Collision Probability (Pc) TrendNot Available

    UME 1 (ISS 1) & SL-8 R/B Miss Distance (Miss Distance) Trend

    UME 1 (ISS 1) & SL-8 R/B Miss Distance (Miss Distance) TrendNot Available

    UME 1 (ISS 1)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SL-8 R/BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    UME 1 (ISS 1)Collision Probability Trend

    Object 1 Probability TrendNot Available

    SL-8 R/BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with UME 1 (ISS 1)

    No nearby objects data