Asteroids

2026MS3 help

Last update: 2026-06-28 12:45 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.570

Aphelion (Q)

1.232

Eccentricity (e)

0.367

Inclination (i)

3.7

deg

Orbit period (P)

312.3

Earth MOID

0.01618

U parameter

5.3

Next Earth close approach

Date

2027-10-07

Nominal distance (from Earth center)

0.08352

12494919

Maximum Brightness

23.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

27 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-06-25

Observatory

Palomar Mountain--ZTF

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

0.900912

1-sigma variation

0.000005

Unit

Eccentricity (e)

Value

0.367488

1-sigma variation

0.000396

Unit

Inclination (i)

Value

3.6562

1-sigma variation

0.0056

Unit

Long. of Ascending Node (Ω)

Value

105.0823

1-sigma variation

0.0044

Unit

Arg. of Perihelion (ω)

Value

35.9040

1-sigma variation

0.0041

Unit

Mean Anomaly (M)

Value

75.95534

1-sigma variation

0.04792

Unit

Perihelion distance

Value

0.569838

1-sigma variation

Unit

Aphelion distance

Value

1.231986

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.382941

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.092448

1-sigma variation

Unit

MOID

Value

0.016178

1-sigma variation

Unit

Orbit Period

Value

312.3361

1-sigma variation

Unit

U parameter

Value

5.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.59620E-11	1.55510E-9	2.10991E-8	-1.43158E-8	1.52965E-8	-1.90991E-7
e	1.55510E-9	1.56466E-7	2.22383E-6	-1.68910E-6	1.57783E-6	-1.89532E-5
i	2.10991E-8	2.22383E-6	3.18207E-5	-2.45275E-5	2.27181E-5	-2.69091E-4
Ω	-1.43158E-8	-1.68910E-6	-2.45275E-5	1.95094E-5	-1.77502E-5	2.03901E-4
ω	1.52965E-8	1.57783E-6	2.27181E-5	-1.77502E-5	1.64924E-5	-1.90953E-4
M	-1.90991E-7	-1.89532E-5	-2.69091E-4	2.03901E-4	-1.90953E-4	2.29653E-3

Date of computation: 2026-06-28 12:45 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

24.951

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

27 - 60*

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

0.636525

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-06-25.29029

Unit

Source

[2]

Last Observation

Value

2026-06-27.977731

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

63 (1)

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 2026MS3 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	1950-07-12 10:15	548.2	0.1662071	0.1625673	0.0012139
EARTH	1968-09-05 18:09	> 1 d	0.1988314	0.1867396	0.0040651
EARTH	1973-06-26 07:59	540.4	0.1810300	0.1463244	0.0115833
EARTH	1974-09-26 23:44	> 1 d	0.1402263	0.1168481	0.0080069
EARTH	1979-06-23 16:45	277.2	0.0823277	0.0599856	0.0075205
EARTH	1980-10-06 17:23	339.1	0.0744684	0.0654826	0.0036861
EARTH	1985-06-21 23:40	11.8	0.0181899	0.0176450	0.0003333
EARTH	1986-10-07 17:37	29.5	0.0688427	0.0670434	0.0006642
VENUS	1986-11-15 21:14	128.1	0.0460038	0.0404826	0.0018774
EARTH	1991-06-24 11:28	92.4	0.0669848	0.0637668	0.0010747
EARTH	1992-10-05 00:10	17.4	0.1301469	0.1298232	0.0001079
EARTH	1997-07-09 14:43	644.6	0.1565524	0.1524574	0.0013658
VENUS	2002-04-03 12:51	237.2	0.0406493	0.0339721	0.0023113
EARTH	2015-09-20 18:09	319.8	0.1622900	0.1602836	0.0006693
VENUS	2020-05-13 08:47	59.0	0.0171982	0.0169032	0.0001003
EARTH	2020-06-23 05:36	6.8	0.0812371	0.0803850	0.0002841
EARTH	2021-10-07 10:36	44.8	0.0740756	0.0720931	0.0006795
EARTH	2026-06-22 14:00	< 1 min	0.0171094	0.0170462	0.0000211
EARTH	2027-10-07 13:13	35.3	0.0835234	0.0810733	0.0008425
EARTH	2032-06-28 12:48	76.6	0.1084285	0.1079217	0.0001690
EARTH	2033-10-03 11:04	62.7	0.1794685	0.1752818	0.0013990
VENUS	2035-10-01 10:34	88.4	0.0363867	0.0351431	0.0004155
EARTH	2038-07-17 10:55	123.5	0.1809427	0.1803717	0.0001903
EARTH	2062-09-13 09:34	242.8	0.1853491	0.1849333	0.0001386
EARTH	2067-06-26 14:58	60.6	0.1628425	0.1582488	0.0015315
EARTH	2068-09-29 09:47	94.8	0.1326300	0.1321140	0.0001721
EARTH	2073-06-23 12:35	28.7	0.0781976	0.0749634	0.0010792
EARTH	2074-10-07 23:19	8.5	0.0755765	0.0746168	0.0003224
VENUS	2079-03-03 05:37	106.9	0.0422202	0.0389299	0.0011103
EARTH	2079-06-22 19:04	7.7	0.0186116	0.0183221	0.0000991
EARTH	2080-10-08 04:08	13.3	0.0666270	0.0664200	0.0000991
EARTH	2085-06-22 09:43	7.9	0.0181558	0.0176444	0.0001756
EARTH	2086-10-09 03:39	12.1	0.0666174	0.0664752	0.0000507
EARTH	2091-06-23 15:41	39.3	0.0627270	0.0593107	0.0011406
EARTH	2092-10-07 21:21	151.4	0.0882966	0.0839418	0.0014978
VENUS	2094-10-19 03:03	225.5	0.0233910	0.0207122	0.0009849
EARTH	2097-06-25 13:41	65.7	0.1473923	0.1432578	0.0013784
EARTH	2098-09-28 03:17	708.3	0.1459950	0.1403913	0.0018765
EARTH	2104-09-14 13:22	995.9	0.1883740	0.1841148	0.0014224
VENUS	2124-09-08 08:29	64.5	0.0214630	0.0209572	0.0002915

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
110.88434837	166.18402561	0.01617764	MINIMUM
252.98210686	270.95164617	0.06370788	MINIMUM
182.55207606	218.74929762	0.22278050	SADDLE
3.41842707	40.47054927	0.41828803	SADDLE
2.93252790	219.74540049	1.58279713	SADDLE
181.05820210	37.71001218	2.21843022	MAXIMUM

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MOID Plots

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