Asteroids

2026RW3 help

Last update: 2026-09-11 13:01 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.749

Aphelion (Q)

1.478

Eccentricity (e)

0.327

Inclination (i)

3.0

deg

Orbit period (P)

429.0

Earth MOID

0.00033

U parameter

6.7

Next Earth close approach

Date

2032-09-11

Nominal distance (from Earth center)

0.01824

2728965

Maximum Brightness

22.1

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

27.6

mag

Diameter

8 - 18*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-09-08

Observatory

ATLAS South Africa, Sutherland

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

1.113116

1-sigma variation

0.000104

Unit

Eccentricity (e)

Value

0.327495

1-sigma variation

0.000124

Unit

Inclination (i)

Value

3.0323

1-sigma variation

0.0012

Unit

Long. of Ascending Node (Ω)

Value

346.9912

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

92.7274

1-sigma variation

0.0021

Unit

Mean Anomaly (M)

Value

226.29157

1-sigma variation

0.02583

Unit

Perihelion distance

Value

0.748575

1-sigma variation

Unit

Aphelion distance

Value

1.477656

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.001988

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.013945

1-sigma variation

Unit

MOID

Value

0.000327

1-sigma variation

Unit

Orbit Period

Value

428.9523

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.07951E-8	1.28113E-8	1.19373E-7	-5.87590E-9	-1.45585E-7	2.68345E-6
e	1.28113E-8	1.53816E-8	1.44139E-7	-6.95879E-9	-1.51322E-7	3.18542E-6
i	1.19373E-7	1.44139E-7	1.35700E-6	-6.53729E-8	-1.31071E-6	2.96847E-5
Ω	-5.87590E-9	-6.95879E-9	-6.53729E-8	3.37783E-9	8.08288E-8	-1.46057E-6
ω	-1.45585E-7	-1.51322E-7	-1.31071E-6	8.08288E-8	4.55525E-6	-3.60931E-5
M	2.68345E-6	3.18542E-6	2.96847E-5	-1.46057E-6	-3.60931E-5	6.67052E-4

Date of computation: 2026-09-11 13:01 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

27.587

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

8 - 18*

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

0.603031

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-09-08.913422

Unit

Source

[2]

Last Observation

Value

2026-09-09.916495

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

31 (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 2026RW3 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	1950-08-28 19:28	> 1 mo	0.1832228	0.0042701	2.2765330
EARTH	1952-02-29 03:31	> 1 mo	0.1124907	0.0045600	2.5908765
EARTH	1972-09-03 11:19	> 1 w	0.0614432	0.0046377	0.3420326
EARTH	1974-03-10 09:41	> 1 d	0.0042637	0.0018829	0.0171871
MARS	1977-02-11 19:24	> 1 d	0.0389424	0.0316668	0.0062547
EARTH	1979-09-16 16:35	> 1 d	0.0848679	0.0288207	0.0186846
EARTH	1994-01-25 15:24	318.4	0.1893889	0.1882343	0.0003849
EARTH	1999-09-04 04:44	661.2	0.1187514	0.0918960	0.0089518
EARTH	2001-03-14 01:23	781.4	0.0727093	0.0394606	0.0110889
EARTH	2006-10-14 04:37	> 1 d	0.1708532	0.1502713	0.0068696
EARTH	2021-03-03 16:03	738.7	0.0868765	0.0709388	0.0053137
EARTH	2026-09-10 14:29	< 1 min	0.0027073	0.0027042	0.0000010
EARTH	2032-09-11 02:43	451.8	0.0182420	0.0042401	0.0046706
EARTH	2038-10-06 06:35	> 1 w	0.1499797	0.0963294	0.0179344
EARTH	2057-01-16 18:36	> 1 mo	0.1911298	0.0772175	0.0385637
EARTH	2063-03-01 01:49	> 1 d	0.0594990	0.0020627	0.0823042
MARS	2067-05-26 19:05	> 1 d	0.0310816	0.0269750	0.0116055
EARTH	2069-03-09 02:43	> 1 d	0.0743853	0.0019791	0.0242080
EARTH	2073-08-30 21:05	> 1 d	0.1968166	0.1105398	0.0287601
EARTH	2079-09-08 04:36	> 1 d	0.0466753	0.0010918	0.0930331
EARTH	2085-09-16 08:25	> 1 d	0.0745388	0.0192777	0.0184304
EARTH	2091-10-26 12:43	> 1 mo	0.1886656	0.0785750	0.0373534
EARTH	2110-02-02 15:57	> 1 mo	0.1617382	0.0178082	0.2349840
EARTH	2116-03-05 09:59	> 1 w	0.0101196	0.0014839	0.2370082
EARTH	2122-02-27 19:58	> 1 mo	0.0845085	0.0000000	5.2710007

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
286.82465907	243.75753281	0.00032659	MINIMUM
70.68377876	64.23560742	0.00236729	MINIMUM
358.35145780	333.56198379	0.24086927	SADDLE
179.14981458	154.43124533	0.46693336	SADDLE
358.33117339	153.55065604	1.76316169	SADDLE
179.21494278	334.48662262	2.46188429	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2026RW3

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2055-09-09.763	71884.763	-2.725	0.60 ± 0.009	3.98E5	7.00E-8	4.35E-2	-8.18
2065-09-09.355	75537.355	-3.260	0.78 ± 0.012	3.13E5	1.94E-8	4.34E-2	-8.87
2072-09-08.970	78093.970	-4.725	0.27 ± 0.066	2.07E5	8.40E-11	4.34E-2	-11.31
2072-09-09.007	78094.007	-4.717	1.24 ± 0.000	1.75E5	1.03E-10	4.34E-2	-11.22
2072-09-09.007	78094.007	-4.688	1.42 ± 0.001	3.42E5	2.43E-11	4.34E-2	-11.84
2074-03-05.375	78636.375	-3.967	0.46 ± 0.000	8.37E6	5.39E-11	4.35E-2	-11.52
2076-09-09.041	79555.041	-3.251	1.34 ± 0.006	1.41E5	3.65E-8	4.34E-2	-8.70
2087-03-07.782	83386.782	-1.301	1.43 ± 0.063	6.07E6	3.23E-8	4.36E-2	-8.84
2099-03-07.539	87769.539	-0.701	1.16 ± 0.000	3.21E7	2.11E-8	4.36E-2	-9.10
2103-03-07.855	89229.855	0.813	1.09 ± 0.000	4.17E7	1.52E-8	4.37E-2	-9.27
2104-09-09.623	89781.623	0.878	0.21 ± 0.030	1.73E5	4.86E-6	4.37E-2	-6.77
2104-09-09.664	89781.664	-1.451	1.11 ± 0.026	2.11E5	2.04E-6	4.36E-2	-7.15
2104-09-09.698	89781.698	0.494	1.54 ± 0.000	1.45E6	8.55E-8	4.37E-2	-8.52
2109-03-07.380	91421.380	1.165	1.02 ± 0.000	2.15E7	2.88E-8	4.38E-2	-9.02
2109-03-07.396	91421.396	1.432	0.43 ± 0.077	5.46E6	7.82E-8	4.38E-2	-8.59
2110-09-10.050	91973.050	1.014	0.51 ± 0.003	2.02E5	3.51E-6	4.38E-2	-6.94
2110-09-10.218	91973.218	-1.450	1.24 ± 0.039	4.56E6	5.71E-8	4.36E-2	-8.73
2110-09-10.223	91973.223	-0.777	0.80 ± 0.000	2.73E6	3.30E-7	4.36E-2	-7.97
2111-09-10.219	92338.219	-0.740	1.39 ± 1.240	1.42E8	2.83E-9	4.34E-2	-10.04
2112-03-07.560	92517.560	-2.102	1.31 ± 0.253	3.52E7	1.84E-9	4.35E-2	-10.24
2117-09-09.899	94529.899	0.877	1.20 ± 0.000	2.27E7	2.35E-8	4.37E-2	-9.15
2123-09-10.142	96721.142	0.532	0.20 ± 0.000	5.55E7	1.92E-8	4.37E-2	-9.27
2123-09-10.291	96721.291	-0.787	1.34 ± 0.016	2.09E6	2.20E-7	4.36E-2	-8.21
2123-09-10.323	96721.323	-0.780	0.72 ± 0.022	5.48E6	1.56E-7	4.36E-2	-8.36
2124-03-07.050	96900.050	0.911	1.29 ± 0.096	3.63E6	1.25E-7	4.36E-2	-8.46


Based on 31 optical observations (of which 2 are rejected as outliers) from 2026/09/08.913 to 2026/09/09.916.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.55 and 1.55 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260911 140148.032 UTC.

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