Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.904676E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-08-29T18:51:56+0800
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    1 Object 1

    AOE ID 56574
    NORAD ID 56574
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 69083
    NORAD ID 69083
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter COSMOS 2499 DEB QIANFAN-137
    Time of Closest Approach 2026-08-29T12:03:01+0000
    Collision Probability (Pc) 1.904676E-6
    Conjunction Distance (km) 2.363 km
    Relative Speed (km/s) 14.177 km/s
    Conjunction Risk Parameters R (Radial): 2.235 | I (In-track): 0.19 | C (Cross-track): -0.741
    Collision Risk Index (CRI) 0.41
    X Position (km) 2005.016 2004.252
    Position Y (km) -842.332 -842.826
    Position Z (km) 7140.074 7137.894
    Velocity X (km/s) 7.101 -6.261
    Velocity Y (km/s) 0.643 3.111
    Velocity Z (km/s) -1.921 2.123

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2499 DEB QIANFAN-137
    Semimajor Axis (a) 7634.465 km 7458.616 km
    Eccentricity (e) 0.021427 0.000234
    Inclination (i) 82.4230° 88.9931°
    RAAN 183.7840° 333.9441°
    Perigee Argument 109.6682° 294.5946°
    Mean Anomaly (M) 252.7689° 65.4960°
    Apogee 1419.909 km 1082.222 km
    Perigee 1092.747 km 1078.736 km
    Orbit Epoch 2026-08-28T13:23:00+0000 2026-08-28T21:25:18+0000

    COSMOS 2499 DEB & QIANFAN-137 Collision Probability (Pc) Trend

    COSMOS 2499 DEB & QIANFAN-137 Collision Probability (Pc) TrendNot Available

    COSMOS 2499 DEB & QIANFAN-137 Miss Distance (Miss Distance) Trend

    COSMOS 2499 DEB & QIANFAN-137 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2499 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-137Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2499 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-137Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2499 DEB

    No nearby objects data