Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.051134E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T13:07:47+0800
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    1 Object 1

    Name IRAS
    AOE ID 13777
    NORAD ID 13777
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 61558
    NORAD ID 61558
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter IRAS QIANFAN-25
    Time of Closest Approach 2026-09-12T15:46:51+0000
    Collision Probability (Pc) 2.051134E-6
    Conjunction Distance (km) 1.667 km
    Relative Speed (km/s) 3.962 km/s
    Conjunction Risk Parameters R (Radial): 1.043 | I (In-track): -1.252 | C (Cross-track): 0.347
    Collision Risk Index (CRI) 0.41
    X Position (km) 1565.981 1566.758
    Position Y (km) 1868.687 1870.052
    Position Z (km) 6825.275 6825.83
    Velocity X (km/s) -1.299 -4.778
    Velocity Y (km/s) -6.968 -5.094
    Velocity Z (km/s) 2.199 2.48

    Orbital Parameters 国际轨道数据源

    Parameter IRAS QIANFAN-25
    Semimajor Axis (a) 7268.513 km 7250.801 km
    Eccentricity (e) 0.001959 0.001192
    Inclination (i) 99.0706° 88.9825°
    RAAN 74.8851° 47.3953°
    Perigee Argument 88.1664° 198.4012°
    Mean Anomaly (M) 272.1745° 161.6741°
    Apogee 904.619 km 881.305 km
    Perigee 876.133 km 864.023 km
    Orbit Epoch 2026-09-10T22:18:03+0000 2026-09-10T20:44:58+0000

    IRAS & QIANFAN-25 Collision Probability (Pc) Trend

    IRAS & QIANFAN-25 Collision Probability (Pc) TrendNot Available

    IRAS & QIANFAN-25 Miss Distance (Miss Distance) Trend

    IRAS & QIANFAN-25 Miss Distance (Miss Distance) TrendNot Available

    IRASMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-25Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRASCollision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-25Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRAS

    No nearby objects data