Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.556255E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T22:02:25+0800
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    1 Object 1

    AOE ID 25977
    NORAD ID 25977
    Object Type PAYLOAD
    Country
    FR FR
    VS

    2 Object 2

    AOE ID 58199
    NORAD ID 58199
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter HELIOS 1B TIANHUI 5A
    Time of Closest Approach 2026-09-12T10:31:01+0000
    Collision Probability (Pc) 2.556255E-6
    Conjunction Distance (km) 1.956 km
    Relative Speed (km/s) 11.315 km/s
    Conjunction Risk Parameters R (Radial): 1.942 | I (In-track): 0.152 | C (Cross-track): -0.174
    Collision Risk Index (CRI) 0.43
    X Position (km) 763.718 763.736
    Position Y (km) -1256.386 -1256.86
    Position Z (km) -6833.652 -6835.549
    Velocity X (km/s) -7.173 -1.254
    Velocity Y (km/s) 2.008 -7.335
    Velocity Z (km/s) -1.172 1.209

    Orbital Parameters 国际轨道数据源

    Parameter HELIOS 1B TIANHUI 5A
    Semimajor Axis (a) 6981.720 km 6983.632 km
    Eccentricity (e) 0.000179 0.000153
    Inclination (i) 98.1516° 97.8214°
    RAAN 161.9130° 258.7419°
    Perigee Argument 122.2534° 89.1914°
    Mean Anomaly (M) 237.8855° 270.9478°
    Apogee 604.832 km 606.564 km
    Perigee 602.334 km 604.426 km
    Orbit Epoch 2026-09-11T07:31:45+0000 2026-09-09T13:27:44+0000

    HELIOS 1B & TIANHUI 5A Collision Probability (Pc) Trend

    HELIOS 1B & TIANHUI 5A Collision Probability (Pc) TrendNot Available

    HELIOS 1B & TIANHUI 5A Miss Distance (Miss Distance) Trend

    HELIOS 1B & TIANHUI 5A Miss Distance (Miss Distance) TrendNot Available

    HELIOS 1BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    TIANHUI 5AMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    HELIOS 1BCollision Probability Trend

    Object 1 Probability TrendNot Available

    TIANHUI 5ACollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with HELIOS 1B

    No nearby objects data