Asteroids

2024UM9 help

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

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Atira

Perihelion (q)

0.803

Aphelion (Q)

0.919

Eccentricity (e)

0.067

Inclination (i)

21.2

deg

Orbit period (P)

291.7

Earth MOID

0.08383

U parameter

1.6

Next Earth close approach

Date

2048-06-08

Nominal distance (from Earth center)

0.19788

29601862

Maximum Brightness

34.2

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

20.6

mag

Diameter

200 - 500*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-10-26

Observatory

Mt. Lemmon Survey

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

0.860871

1-sigma variation

1.807E-8

Unit

Eccentricity (e)

Value

0.067264

1-sigma variation

4.589E-7

Unit

Inclination (i)

Value

21.1709

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

252.6706

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

317.1503

1-sigma variation

0.0009

Unit

Mean Anomaly (M)

Value

71.91507

1-sigma variation

0.00101

Unit

Perihelion distance

Value

0.802965

1-sigma variation

Unit

Aphelion distance

Value

0.918777

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.197409

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.084277

1-sigma variation

Unit

MOID

Value

0.083829

1-sigma variation

Unit

Orbit Period

Value

291.7464

1-sigma variation

Unit

U parameter

Value

1.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.26582E-16	3.70442E-15	-1.01765E-12	1.07712E-12	-1.08036E-11	1.10358E-11
e	3.70442E-15	2.10611E-13	-2.07871E-11	1.07767E-11	-3.22473E-10	3.56691E-10
i	-1.01765E-12	-2.07871E-11	1.47775E-8	-2.02873E-9	1.37690E-8	-9.29567E-9
Ω	1.07712E-12	1.07767E-11	-2.02873E-9	8.13284E-9	-5.84756E-8	5.94915E-8
ω	-1.08036E-11	-3.22473E-10	1.37690E-8	-5.84756E-8	8.64853E-7	-9.39915E-7
M	1.10358E-11	3.56691E-10	-9.29567E-9	5.94915E-8	-9.39915E-7	1.02727E-6

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

20.569

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

200 - 500*

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

1753

Unit

Source

[1]

Unobserved

Value

179

Unit

Source

[1]

Normalized RMS of residuals

Value

0.805401

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-01-24.226273

Unit

Source

[2]

Last Observation

Value

2024-11-11.490022

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

32 (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 2024UM9 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	1972-11-21 12:00	1.1	0.1888190	0.1887865	0.0000109
EARTH	1976-11-23 10:31	1.1	0.1647725	0.1647425	0.0000100
EARTH	1980-11-24 23:54	1.1	0.1454102	0.1453840	0.0000087
EARTH	1984-11-26 05:42	< 1 min	0.1318290	0.1318070	0.0000073
EARTH	1988-11-27 00:17	< 1 min	0.1230832	0.1230652	0.0000060
EARTH	1992-11-27 10:37	< 1 min	0.1190715	0.1190568	0.0000049
EARTH	1996-11-27 10:19	< 1 min	0.1190236	0.1190113	0.0000041
EARTH	2000-11-27 02:13	< 1 min	0.1230098	0.1229992	0.0000035
EARTH	2004-11-26 08:25	< 1 min	0.1308059	0.1307967	0.0000031
EARTH	2008-11-25 06:42	< 1 min	0.1436080	0.1436000	0.0000026
EARTH	2012-11-23 20:38	< 1 min	0.1607464	0.1607397	0.0000022
EARTH	2016-11-22 01:32	< 1 min	0.1835267	0.1835215	0.0000017
EARTH	2048-06-08 11:13	< 1 min	0.1978762	0.1978748	0.0000005
EARTH	2052-06-03 14:49	1.1	0.1980192	0.1980177	0.0000005
EARTH	2103-12-17 05:15	1.1	0.1831902	0.1831638	0.0000088
EARTH	2107-12-15 01:16	1.1	0.1581538	0.1581288	0.0000083
EARTH	2111-12-13 05:56	1.1	0.1375016	0.1374785	0.0000077
EARTH	2115-12-11 15:52	1.1	0.1211267	0.1211063	0.0000068
EARTH	2119-12-10 10:40	1.1	0.1092895	0.1092720	0.0000058
EARTH	2123-12-09 11:23	1.0	0.1013109	0.1012962	0.0000049

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
224.17963030	325.81795277	0.08328514	MINIMUM
43.28800731	148.76689079	0.19523669	MINIMUM
127.84811669	235.19941930	0.36660736	SADDLE
319.23725632	59.43481027	0.37266737	SADDLE
347.48348978	270.83327652	1.78221957	SADDLE
208.14897456	131.81896574	1.91939354	MAXIMUM

Download:

MOID Plots

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