Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.303725E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T20:12:51+0800
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    1 Object 1

    AOE ID 50573
    NORAD ID 50573
    Object Type PAYLOAD
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 68028
    NORAD ID 68028
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter TIANHUI 4B STARLINK-36253
    Time of Closest Approach 2026-09-05T14:04:06+0000
    Collision Probability (Pc) 1.303725E-6
    Conjunction Distance (km) 2.882 km
    Relative Speed (km/s) 12.941 km/s
    Conjunction Risk Parameters R (Radial): -1.402 | I (In-track): 1.35 | C (Cross-track): -2.124
    Collision Risk Index (CRI) 0.37
    X Position (km) -496.994 -496.179
    Position Y (km) 750.105 752.355
    Position Z (km) 6728.047 6726.441
    Velocity X (km/s) -5.024 7.35
    Velocity Y (km/s) 5.7 2.147
    Velocity Z (km/s) -1.006 0.302

    Orbital Parameters 国际轨道数据源

    Parameter TIANHUI 4B STARLINK-36253
    Semimajor Axis (a) 6802.278 km 6799.085 km
    Eccentricity (e) 0.001039 0.000686
    Inclination (i) 88.9702° 97.2804°
    RAAN 311.3147° 195.1979°
    Perigee Argument 109.3323° 89.2671°
    Mean Anomaly (M) 250.9061° 270.9365°
    Apogee 431.207 km 425.610 km
    Perigee 417.075 km 416.286 km
    Orbit Epoch 2026-09-05T04:20:12+0000 2026-09-04T19:04:55+0000

    TIANHUI 4B & STARLINK-36253 Collision Probability (Pc) Trend

    TIANHUI 4B & STARLINK-36253 Collision Probability (Pc) TrendNot Available

    TIANHUI 4B & STARLINK-36253 Miss Distance (Miss Distance) Trend

    TIANHUI 4B & STARLINK-36253 Miss Distance (Miss Distance) TrendNot Available

    TIANHUI 4BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-36253Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    TIANHUI 4BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-36253Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with TIANHUI 4B

    No nearby objects data