Asteroids

2023UH help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.892

Aphelion (Q)

1.188

Eccentricity (e)

0.142

Inclination (i)

19.9

deg

Orbit period (P)

387.4

Earth MOID

0.01462

U parameter

7.6

Next Earth close approach

Date

2041-10-22

Nominal distance (from Earth center)

0.16252

24311906

Maximum Brightness

24.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.1

mag

Diameter

16 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-10-16

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.039935

1-sigma variation

0.000356

Unit

Eccentricity (e)

Value

0.142457

1-sigma variation

0.000250

Unit

Inclination (i)

Value

19.8895

1-sigma variation

0.0232

Unit

Long. of Ascending Node (Ω)

Value

25.9198

1-sigma variation

0.0016

Unit

Arg. of Perihelion (ω)

Value

87.2054

1-sigma variation

0.0257

Unit

Mean Anomaly (M)

Value

279.43866

1-sigma variation

0.24685

Unit

Perihelion distance

Value

0.891790

1-sigma variation

Unit

Aphelion distance

Value

1.188081

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.015607

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.021008

1-sigma variation

Unit

MOID

Value

0.014624

1-sigma variation

Unit

Orbit Period

Value

387.3540

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.26598E-7	8.90327E-8	8.26518E-6	5.63057E-7	-9.13036E-6	-8.78307E-5
e	8.90327E-8	6.26412E-8	5.81541E-6	3.96042E-7	-6.41907E-6	-6.17697E-5
i	8.26518E-6	5.81541E-6	5.39894E-4	3.67665E-5	-5.95881E-4	-5.73428E-3
Ω	5.63057E-7	3.96042E-7	3.67665E-5	2.50441E-6	-4.06033E-5	-3.90637E-4
ω	-9.13036E-6	-6.41907E-6	-5.95881E-4	-4.06033E-5	6.58643E-4	6.33434E-3
M	-8.78307E-5	-6.17697E-5	-5.73428E-3	-3.90637E-4	6.33434E-3	6.09348E-2

Date of computation: 2025-09-10 00:30 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

26.067

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

16 - 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

[-]

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

728

Unit

Source

[1]

Normalized RMS of residuals

Value

0.659626

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-10-16.372016

Unit

Source

[2]

Last Observation

Value

2023-10-19.48412

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

30 (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 2023UH 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	1954-10-22 04:48	> 1 w	0.0772878	0.0107890	0.6729118
EARTH	1956-04-16 19:56	> 1 w	0.1167379	0.0275269	0.6303841
EARTH	1971-10-20 10:19	913.9	0.0121827	0.0114639	0.0077724
EARTH	1973-04-15 01:05	621.2	0.0306098	0.0237248	0.0122572
EARTH	1988-10-15 18:27	593.3	0.1333564	0.0972146	0.0120766
EARTH	1990-04-13 14:47	120.6	0.1010210	0.0588161	0.0144377
EARTH	2006-10-22 01:49	998.1	0.0710323	0.0125647	0.0342570
EARTH	2008-04-16 21:32	1307.7	0.1065042	0.0251552	0.0326781
EARTH	2023-10-20 09:15	< 1 min	0.0173072	0.0172419	0.0000218
EARTH	2025-04-15 00:07	52.5	0.0223455	0.0200528	0.0011358
EARTH	2041-10-22 22:17	253.5	0.1625151	0.0184378	0.0545883
EARTH	2042-04-13 14:11	575.9	0.1822547	0.0349730	0.0533405
EARTH	2043-04-20 17:02	> 1 d	0.1904003	0.0292307	0.0556463
EARTH	2058-10-19 23:22	> 1 d	0.0264189	0.0149976	0.0572636
EARTH	2060-04-14 13:42	> 1 d	0.0203353	0.0182424	0.0202643
EARTH	2076-10-17 04:49	> 1 w	0.0985489	0.0161650	0.2385007
EARTH	2078-04-13 16:20	> 1 d	0.0923562	0.0171642	0.2357500
EARTH	2095-10-22 18:09	> 1 d	0.0936690	0.0113268	0.0961918
EARTH	2097-04-17 15:24	> 1 d	0.0994913	0.0251857	0.0754673
EARTH	2113-10-21 12:21	> 1 d	0.0165506	0.0147992	0.0801559
EARTH	2115-04-17 01:31	> 1 w	0.0315843	0.0174564	0.3403932

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
281.81772593	285.40512792	0.01489494	MINIMUM
83.36240168	101.62771424	0.02090930	MINIMUM
2.60921164	13.64877981	0.33657141	SADDLE
182.61247060	193.30835211	0.41672593	SADDLE
2.00010869	192.90717686	1.87917632	SADDLE
179.92471243	10.79087427	2.13973585	MAXIMUM

Download:

MOID Plots

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