Asteroids

2026RG15 help

Last update: 2026-09-14 13:16 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.968

Aphelion (Q)

1.828

Eccentricity (e)

0.308

Inclination (i)

12.3

deg

Orbit period (P)

603.7

Earth MOID

0.00067

U parameter

7.6

Next Earth close approach

Date

2026-09-15

Nominal distance (from Earth center)

0.00063

94735

Maximum Brightness

13.8

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

25.9

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-09-12

Observatory

ATLAS Chile, Rio Hurtado

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.397984

1-sigma variation

0.000702

Unit

Eccentricity (e)

Value

0.307715

1-sigma variation

0.000360

Unit

Inclination (i)

Value

12.3490

1-sigma variation

0.0102

Unit

Long. of Ascending Node (Ω)

Value

352.1014

1-sigma variation

0.0013

Unit

Arg. of Perihelion (ω)

Value

32.7805

1-sigma variation

0.0076

Unit

Mean Anomaly (M)

Value

284.42409

1-sigma variation

0.06414

Unit

Perihelion distance

Value

0.967804

1-sigma variation

Unit

Aphelion distance

Value

1.828165

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.000763

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.713648

1-sigma variation

Unit

MOID

Value

0.000671

1-sigma variation

Unit

Orbit Period

Value

603.7426

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.93363E-7	2.52582E-7	7.19464E-6	-7.98929E-7	-5.32008E-6	4.50491E-5
e	2.52582E-7	1.29314E-7	3.68364E-6	-4.08186E-7	-2.72274E-6	2.30624E-5
i	7.19464E-6	3.68364E-6	1.04966E-4	-1.15251E-5	-7.74520E-5	6.56805E-4
Ω	-7.98929E-7	-4.08186E-7	-1.15251E-5	1.72065E-6	9.00229E-6	-7.33951E-5
ω	-5.32008E-6	-2.72274E-6	-7.74520E-5	9.00229E-6	5.78107E-5	-4.86224E-4
M	4.50491E-5	2.30624E-5	6.56805E-4	-7.33951E-5	-4.86224E-4	4.11392E-3

Date of computation: 2026-09-14 13:16 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

25.854

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

18 - 40*

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

0.34136

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-09-12.190051

Unit

Source

[2]

Last Observation

Value

2026-09-13.43977

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

26 (2)

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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2026RG15 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1975-09-05 00:28	> 1 mo	0.0937535	0.0098908	31.9066252
EARTH	1988-09-15 09:05	> 1 w	0.0049773	0.0008643	0.1312957
EARTH	2026-09-15 07:35	1.9	0.0006333	0.0006321	0.0000004
EARTH	2039-08-29 07:57	> 1 d	0.1417493	0.0203128	0.0575557
EARTH	2076-11-01 09:23	> 1 w	0.1946391	0.1158521	0.0881076
EARTH	2089-10-03 16:20	> 1 w	0.0909289	0.0273170	0.0807316
EARTH	2102-09-21 17:11	> 1 d	0.0311945	0.0017511	0.0265500
EARTH	2115-10-17 16:39	> 1 mo	0.1359652	0.0652731	0.1641237

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
335.76979940	248.49084254	0.00067135	MINIMUM
183.10089441	101.58941620	0.84075320	SADDLE
358.85844503	99.30068046	1.96744422	SADDLE
177.15277949	277.30018456	2.82161380	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2026RG15

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2050-09-15.104	70064.104	2.419	1.58 ± 0.003	1.49E5	1.15E-7	4.49E-1	-7.09
2063-09-15.398	74812.398	-2.877	0.88 ± 0.002	2.96E3	5.90E-6	4.44E-1	-5.57
2063-09-15.401	74812.401	-2.877	0.99 ± 0.047	4.81E3	3.54E-6	4.44E-1	-5.79
2063-09-15.406	74812.406	-2.877	1.31 ± 0.057	6.82E3	2.02E-6	4.45E-1	-6.03
2076-09-14.623	79560.623	-2.688	1.36 ± 0.133	1.79E4	1.83E-6	4.45E-1	-6.20
2076-09-14.628	79560.628	2.104	1.38 ± 0.003	2.52E4	3.01E-6	4.50E-1	-5.98
2076-09-14.655	79560.655	-1.736	0.66 ± 0.004	1.85E3	1.42E-4	4.46E-1	-4.31


Based on 26 optical observations (of which 2 are rejected as outliers) from 2026/09/12.190 to 2026/09/13.440.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.63 and 1.63 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260914 133919.403 UTC.

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