Asteroids

2023SM5 help

Last update: 2025-02-19 13:28 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.608

Aphelion (Q)

1.293

Eccentricity (e)

0.360

Inclination (i)

10.7

deg

Orbit period (P)

338.6

Earth MOID

0.00169

U parameter

6.8

Next Earth close approach

Date

2036-09-20

Nominal distance (from Earth center)

0.09879

14779075

Maximum Brightness

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

26.4

mag

Diameter

14 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-09-19

Observatory

Pan-STARRS 2, Haleakala

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.950742

1-sigma variation

0.000082

Unit

Eccentricity (e)

Value

0.360274

1-sigma variation

0.000371

Unit

Inclination (i)

Value

10.7010

1-sigma variation

0.0129

Unit

Long. of Ascending Node (Ω)

Value

0.3346

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

118.5434

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

188.38981

1-sigma variation

0.03542

Unit

Perihelion distance

Value

0.608214

1-sigma variation

Unit

Aphelion distance

Value

1.293271

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.003732

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.290507

1-sigma variation

Unit

MOID

Value

0.001693

1-sigma variation

Unit

Orbit Period

Value

338.6045

1-sigma variation

Unit

U parameter

Value

6.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.77433E-9	3.05023E-8	1.05980E-6	-1.19772E-8	4.24874E-8	-2.91470E-6
e	3.05023E-8	1.37399E-7	4.77323E-6	-5.36777E-8	1.93239E-7	-1.31191E-5
i	1.05980E-6	4.77323E-6	1.65830E-4	-1.86822E-6	6.69100E-6	-4.55879E-4
Ω	-1.19772E-8	-5.36777E-8	-1.86822E-6	2.23279E-8	-6.68991E-8	5.17356E-6
ω	4.24874E-8	1.93239E-7	6.69100E-6	-6.68991E-8	3.30225E-7	-1.81243E-5
M	-2.91470E-6	-1.31191E-5	-4.55879E-4	5.17356E-6	-1.81243E-5	1.25445E-3

Date of computation: 2025-02-19 13:28 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

26.436

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

14 - 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

594

Unit

Source

[1]

Normalized RMS of residuals

Value

0.628652

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-09-19.491356

Unit

Source

[2]

Last Observation

Value

2023-09-23.017731

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

15 (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 2023SM5 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	1955-09-12 05:52	> 1 d	0.1938121	0.1428636	0.0170775
VENUS	1962-06-21 16:38	> 1 d	0.0470051	0.0466996	0.0025949
EARTH	1967-09-21 05:17	1316.9	0.0804387	0.0023649	0.0284100
EARTH	1976-05-14 07:57	> 1 d	0.1529872	0.1511097	0.0040860
EARTH	1978-09-23 07:19	806.9	0.0837404	0.0017521	0.0274129
EARTH	2001-09-18 14:21	273.9	0.1402204	0.1235474	0.0055578
EARTH	2010-05-06 03:16	1004.3	0.1728336	0.1623440	0.0039436
EARTH	2012-09-21 19:25	367.2	0.0349522	0.0062419	0.0096664
EARTH	2021-05-10 19:24	376.5	0.1568129	0.1542272	0.0009779
EARTH	2023-09-23 11:13	< 1 min	0.0025147	0.0025060	0.0000029
EARTH	2036-09-20 00:08	458.2	0.0987920	0.0695148	0.0097595
EARTH	2046-05-14 20:12	966.1	0.1623729	0.1528463	0.0044069
EARTH	2049-09-16 16:42	718.8	0.1955033	0.1529416	0.0141874
EARTH	2059-05-08 01:11	> 1 d	0.1561219	0.1524701	0.0031071
EARTH	2061-09-20 14:51	> 1 d	0.1390882	0.0950537	0.0146923
EARTH	2074-09-23 12:21	336.7	0.0069395	0.0008858	0.0128510
EARTH	2085-05-12 12:41	> 1 mo	0.1559523	0.1498914	0.1905015
EARTH	2088-09-19 17:50	> 1 w	0.1076303	0.0007077	0.8634339
EARTH	2099-05-04 17:28	> 1 mo	0.1607025	0.1505916	0.4238864
EARTH	2101-09-16 02:54	> 1 mo	0.1820511	0.0269600	1.0463727
EARTH	2115-09-25 07:13	> 1 d	0.0463781	0.0003934	1.0612004

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
261.35941311	259.00939726	0.00156446	MINIMUM
90.24742211	127.02818296	0.15110187	MINIMUM
173.58855828	193.16323167	0.33693997	SADDLE
355.81540607	10.96280901	0.39687578	SADDLE
359.86413633	196.75558067	1.61905221	SADDLE
181.59132843	18.77457952	2.26929360	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2023SM5

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2109-09-24.244	91622.244	-0.454	0.16 ± 0.000	7.39E7	1.35E-8	3.15E-9	-8.78
2111-09-24.776	92352.776	-0.453	1.30 ± 0.000	5.69E6	6.56E-8	1.53E-8	-8.10
2113-09-24.254	93083.254	1.216	0.53 ± 0.045	2.34E7	2.09E-8	4.82E-9	-8.61
2116-09-23.960	94178.960	-0.282	1.20 ± 0.000	9.47E6	5.83E-8	1.36E-8	-8.18
2118-09-24.499	94909.499	-0.228	0.61 ± 0.001	1.01E5	9.92E-6	2.30E-6	-5.96
2119-09-24.722	95274.722	-0.228	0.87 ± 0.000	5.66E7	1.60E-8	3.71E-9	-8.75
2119-09-24.728	95274.728	-0.106	0.26 ± 0.008	3.50E6	3.11E-7	7.23E-8	-7.46
2122-09-24.474	96370.474	-0.591	1.33 ± 0.000	1.52E6	4.05E-7	9.45E-8	-7.36
2122-09-24.484	96370.484	-0.638	0.40 ± 0.003	2.93E5	3.00E-6	6.99E-7	-6.49
2122-09-24.499	96370.499	-0.588	1.02 ± 0.003	6.80E5	1.05E-6	2.45E-7	-6.95


Based on 15 optical observations (of which 0 are rejected as outliers) from 2023/09/19.491 to 2023/09/23.018.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.40 and 1.40 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20250305 085534.262 UTC.

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