Asteroids

2025QG16 help

Last update: 2025-09-03 13:31 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.426

Aphelion (Q)

1.175

Eccentricity (e)

0.468

Inclination (i)

8.6

deg

Orbit period (P)

261.6

Earth MOID

0.00293

U parameter

6.7

Next Earth close approach

Date

2030-08-29

Nominal distance (from Earth center)

0.08632

12913895

Maximum Brightness

22.9

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

26.3

mag

Diameter

15 - 30*

Taxonomic type

Rotation period (T)

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.800463

1-sigma variation

0.000045

Unit

Eccentricity (e)

Value

0.468127

1-sigma variation

0.000269

Unit

Inclination (i)

Value

8.5842

1-sigma variation

0.0078

Unit

Long. of Ascending Node (Ω)

Value

161.7769

1-sigma variation

0.0010

Unit

Arg. of Perihelion (ω)

Value

323.2516

1-sigma variation

0.0036

Unit

Mean Anomaly (M)

Value

5.34202

1-sigma variation

0.03631

Unit

Perihelion distance

Value

0.425745

1-sigma variation

Unit

Aphelion distance

Value

1.175181

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.537553

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.008900

1-sigma variation

Unit

MOID

Value

0.002933

1-sigma variation

Unit

Orbit Period

Value

261.5835

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.99218E-9	-1.19878E-8	-3.46910E-7	4.32498E-8	-1.59854E-7	-1.61891E-6
e	-1.19878E-8	7.22653E-8	2.09215E-6	-2.61089E-7	9.60365E-7	9.76148E-6
i	-3.46910E-7	2.09215E-6	6.05775E-5	-7.56203E-6	2.77815E-5	2.82620E-4
Ω	4.32498E-8	-2.61089E-7	-7.56203E-6	9.44700E-7	-3.46072E-6	-3.52742E-5
ω	-1.59854E-7	9.60365E-7	2.77815E-5	-3.46072E-6	1.28456E-5	1.29666E-4
M	-1.61891E-6	9.76148E-6	2.82620E-4	-3.52742E-5	1.29666E-4	1.31861E-3

Date of computation: 2025-09-03 13:31 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

26.315

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

15 - 30*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

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Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.844897

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-08-30.344641

Unit

Source

[2]

Last Observation

Value

2025-09-02.28383

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

68 (5)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 2025QG16 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1951-08-31 14:09	> 1 mo	0.1909260	0.0016338	9.0788386
VENUS	1951-09-26 06:29	> 1 mo	0.0244429	0.0243870	0.7744786
EARTH	1953-06-21 06:39	> 1 mo	0.1752797	0.1436739	4.7379976
EARTH	1956-08-31 09:47	> 1 mo	0.0664487	0.0011512	6.0101025
EARTH	1961-07-25 21:08	> 1 mo	0.1931806	0.1924209	0.0874077
EARTH	1966-06-21 11:54	> 1 w	0.1432566	0.1431660	0.0105576
EARTH	1969-09-03 13:42	> 1 d	0.0213791	0.0034667	1.7353714
VENUS	1972-08-24 18:38	> 1 mo	0.0447557	0.0247955	1.9527385
EARTH	1974-08-16 06:18	> 1 mo	0.1569351	0.0466890	0.7569587
EARTH	1979-07-13 04:52	> 1 mo	0.1857649	0.1697353	0.2019466
EARTH	1984-06-20 19:10	> 1 d	0.1496702	0.1414667	0.1234328
EARTH	1987-09-04 00:07	1072.0	0.0072878	0.0032296	0.0650488
EARTH	1992-08-27 17:46	> 1 w	0.0996060	0.0062858	0.0533586
EARTH	1997-08-11 02:44	> 1 w	0.1695067	0.1100421	0.0215290
EARTH	2002-07-23 11:59	> 1 w	0.1905164	0.1901276	0.0009573
EARTH	2007-07-04 11:36	> 1 d	0.1698549	0.1512107	0.0110562
EARTH	2012-06-22 07:55	827.7	0.1434905	0.1434663	0.0001241
EARTH	2015-09-02 17:36	494.5	0.1234847	0.0822531	0.0137440
EARTH	2017-06-22 14:33	358.4	0.1829222	0.1683928	0.0052405
EARTH	2020-09-03 07:07	32.2	0.0092880	0.0035772	0.0020877
EARTH	2025-09-03 02:10	< 1 s	0.0165977	0.0165616	0.0000120
VENUS	2028-08-20 08:12	99.3	0.0375137	0.0338735	0.0012809
EARTH	2030-08-29 20:45	329.0	0.0863241	0.0807310	0.0018645
VENUS	2032-12-08 16:14	224.8	0.0350690	0.0281322	0.0028675
EARTH	2035-08-19 21:46	1080.1	0.1434127	0.1364357	0.0023292
EARTH	2040-08-07 18:13	> 1 d	0.1753277	0.1707011	0.0015550
EARTH	2045-07-27 13:26	> 1 d	0.1885950	0.1880351	0.0002162
EARTH	2050-07-15 21:36	> 1 d	0.1852487	0.1816036	0.0012834
EARTH	2055-07-03 18:03	> 1 d	0.1668491	0.1602966	0.0023733
EARTH	2060-06-24 08:38	632.5	0.1459563	0.1434218	0.0013695
EARTH	2063-09-01 07:43	361.0	0.1799342	0.1553342	0.0082001
EARTH	2065-06-22 09:08	20.9	0.1508030	0.1455518	0.0024869
EARTH	2068-09-02 16:44	270.2	0.1015523	0.0751407	0.0088039
EARTH	2070-06-23 12:50	272.2	0.1866870	0.1707453	0.0057838
EARTH	2073-09-03 19:15	3.7	0.0296871	0.0058050	0.0079880
EARTH	2078-09-03 11:55	41.5	0.0166333	0.0131753	0.0011534
VENUS	2080-12-03 16:25	201.1	0.0292183	0.0270891	0.0018374
EARTH	2083-08-28 21:57	1310.7	0.0969802	0.0768642	0.0067097
EARTH	2088-08-16 16:09	> 1 d	0.1522911	0.1303902	0.0073543
EARTH	2093-08-04 03:59	> 1 d	0.1815819	0.1694762	0.0042005
EARTH	2098-07-22 11:36	> 1 d	0.1885358	0.1879220	0.0005573
EARTH	2103-07-10 03:07	> 1 d	0.1757613	0.1630282	0.0054499
EARTH	2108-06-27 14:27	> 1 d	0.1509217	0.1447216	0.0054053
EARTH	2111-09-01 22:28	1117.0	0.1985333	0.1223279	0.0254030
EARTH	2113-06-23 16:17	322.2	0.1475065	0.1435257	0.0055555
EARTH	2116-09-03 19:25	875.0	0.1061184	0.0212548	0.0282979
EARTH	2118-06-24 18:15	773.6	0.1873349	0.1485751	0.0177515
EARTH	2121-09-04 23:18	140.4	0.0218481	0.0000045	0.0282025

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
236.28345810	240.28442397	0.00293348	MINIMUM
126.80105267	170.21560979	0.14400321	MINIMUM
172.88769187	200.05142403	0.18854163	SADDLE
359.59709321	22.48114895	0.56221417	SADDLE
1.06736713	204.79926495	1.44119026	SADDLE
181.18806141	25.09503437	2.15816177	MAXIMUM

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MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2025QG16

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2106-09-04.902	90506.902	1.378	1.33 ± 0.002	3.56E5	1.94E-7	3.25E-1	-7.49	0
2111-09-05.168	92333.168	1.374	0.79 ± 0.002	4.83E5	7.47E-7	3.25E-1	-6.93	0
2111-09-05.173	92333.173	-2.845	0.58 ± 0.002	4.05E4	4.21E-7	3.27E-1	-7.18	0
2120-09-04.482	95620.482	2.440	0.59 ± 0.003	1.46E5	3.46E-7	3.24E-1	-7.31	0
2121-09-04.747	95985.747	1.349	0.46 ± 0.002	1.06E5	3.86E-6	3.25E-1	-6.27	0
2121-09-04.750	95985.750	-2.590	0.05 ± 0.012	8.25E3	4.57E-6	3.27E-1	-6.19	0
2122-09-05.001	96351.001	3.272	0.61 ± 0.002	4.63E4	9.89E-8	3.24E-1	-7.86	0
2124-09-04.476	97081.476	3.627	1.24 ± 0.021	6.48E3	1.34E-7	3.25E-1	-7.74	0
2125-09-04.732	97446.732	-4.975	1.02 ± 0.003	1.22E5	2.52E-11	3.27E-1	-11.47	n/a
2125-09-04.757	97446.757	1.884	0.73 ± 0.004	9.68E5	1.83E-7	3.25E-1	-7.61	n/a


Based on 68 optical observations (of which 5 are rejected as outliers) from 2025/08/30.345 to 2025/09/02.284.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.35 and 1.35 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20250903 142732.810 UTC.

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Download Impactor Table as: