Asteroids

2025QG4 help

Last update: 2025-08-25 13:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.796

Aphelion (Q)

1.105

Eccentricity (e)

0.163

Inclination (i)

7.4

deg

Orbit period (P)

338.7

Earth MOID

0.00463

U parameter

5.6

Next Earth close approach

Date

2027-01-04

Nominal distance (from Earth center)

0.10123

15144018

Maximum Brightness

27.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.5

mag

Diameter

5 - 12*

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

0.950868

1-sigma variation

0.000013

Unit

Eccentricity (e)

Value

0.162560

1-sigma variation

0.000109

Unit

Inclination (i)

Value

7.3960

1-sigma variation

0.0046

Unit

Long. of Ascending Node (Ω)

Value

326.7596

1-sigma variation

0.0013

Unit

Arg. of Perihelion (ω)

Value

235.2713

1-sigma variation

0.0071

Unit

Mean Anomaly (M)

Value

207.31655

1-sigma variation

0.01894

Unit

Perihelion distance

Value

0.796295

1-sigma variation

Unit

Aphelion distance

Value

1.105442

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.007409

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.141305

1-sigma variation

Unit

MOID

Value

0.004625

1-sigma variation

Unit

Orbit Period

Value

338.6717

1-sigma variation

Unit

U parameter

Value

5.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.69672E-10	-1.36065E-9	-4.87861E-8	-1.36033E-8	-8.98202E-8	2.39882E-7
e	-1.36065E-9	1.18675E-8	4.71004E-7	9.01113E-8	7.61691E-7	-2.05431E-6
i	-4.87861E-8	4.71004E-7	2.09276E-5	2.16613E-6	2.88839E-5	-7.92317E-5
Ω	-1.36033E-8	9.01113E-8	2.16613E-6	1.57860E-6	6.64670E-6	-1.70743E-5
ω	-8.98202E-8	7.61691E-7	2.88839E-5	6.64670E-6	4.99903E-5	-1.33697E-4
M	2.39882E-7	-2.05431E-6	-7.92317E-5	-1.70743E-5	-1.33697E-4	3.58701E-4

Date of computation: 2025-08-25 13:30 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

28.533

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

5 - 12*

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

[-]

Download this part as:

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

0.529834

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-08-23.311051

Unit

Source

[2]

Last Observation

Value

2025-08-24.464176

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

18 (0)

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 2025QG4 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	1950-02-03 15:16	> 1 w	0.1330435	0.1101312	0.0122504
EARTH	1961-06-20 20:51	> 1 d	0.1963309	0.1870862	0.0030926
EARTH	1961-10-03 17:16	> 1 d	0.1481036	0.1419421	0.0020913
EARTH	1962-03-01 08:47	> 1 d	0.1800635	0.1742021	0.0020196
EARTH	1973-08-20 23:44	> 1 d	0.0478365	0.0088720	0.0149668
EARTH	1974-12-27 23:54	1067.5	0.1382144	0.1079543	0.0116037
EARTH	1985-08-18 01:29	15.1	0.0093515	0.0071514	0.0008350
EARTH	1987-01-11 12:44	338.1	0.0866436	0.0863830	0.0001246
EARTH	1998-08-21 14:34	69.6	0.1777237	0.1721627	0.0018537
EARTH	1999-10-21 09:36	> 1 d	0.1634461	0.1629362	0.0001754
EARTH	2000-02-23 05:59	> 1 d	0.1625413	0.1593368	0.0010879
EARTH	2012-08-26 14:41	509.1	0.0831781	0.0790959	0.0013627
EARTH	2013-12-30 19:59	162.0	0.1342355	0.1301079	0.0013958
EARTH	2025-08-18 02:40	3.7	0.0053009	0.0052873	0.0000045
EARTH	2027-01-04 10:41	38.9	0.1012315	0.1010537	0.0000601
EARTH	2038-09-15 08:08	850.2	0.1278085	0.1248921	0.0009751
EARTH	2039-03-11 16:45	1113.3	0.1929606	0.1918617	0.0003708
EARTH	2050-08-19 19:47	70.6	0.1238731	0.1171757	0.0022327
EARTH	2052-01-27 02:04	945.9	0.1136195	0.1111136	0.0008694
EARTH	2063-08-19 11:03	134.5	0.0279014	0.0227235	0.0017333
EARTH	2064-12-28 18:22	93.7	0.1354394	0.1352515	0.0000628
EARTH	2075-08-18 11:53	64.2	0.0144301	0.0040230	0.0097762
EARTH	2077-01-07 10:16	> 1 d	0.0921816	0.0859987	0.0060465
EARTH	2088-08-19 11:19	> 1 w	0.0387771	0.0042849	0.2938264
EARTH	2089-12-31 06:57	> 1 w	0.1295825	0.0944388	0.1560165
EARTH	2101-10-09 03:27	> 1 mo	0.1561856	0.1232038	0.1774188
EARTH	2102-02-26 11:19	> 1 mo	0.1683047	0.1416063	0.2594835
EARTH	2113-08-20 02:14	> 1 w	0.0962162	0.0044803	1.1419437
EARTH	2115-01-22 03:46	> 1 mo	0.1008109	0.0920642	0.4609943

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
114.94741427	224.57938981	0.00462532	MINIMUM
276.56617750	7.99413455	0.09064603	MINIMUM
199.74268182	298.18768465	0.16476921	SADDLE
15.45253157	117.64862401	0.23502556	SADDLE
8.39128137	289.24996745	1.78976339	SADDLE
184.08261654	104.85689819	2.10687492	MAXIMUM

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MOID Plots

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