Asteroids

2023HF1

Last update: 2023-06-03 23:50 UTC

Orbital Properties

Epoch

60000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.971

Aphelion (Q)

1.324

Eccentricity (e)

0.154

Inclination (i)

4.6

deg

Orbit period (P)

448.9

Earth MOID

0.03127

U parameter

4.8

Next Earth close approach

Date

2023-06-21

Nominal distance (from Earth center)

0.03195

4778956

Maximum Brightness

21.3

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

23.8

mag

Diameter

60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-04-16

Observatory

Mt. Lemmon Survey

Orbit Visualiser

Click the button to start Orbit Visualiser

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion
Aphelion
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

60000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.147382

1-sigma variation

0.000007

Unit

Eccentricity (e)

Value

0.153718

1-sigma variation

0.000006

Unit

Inclination (i)

Value

4.5740

1-sigma variation

0.0001

Unit

Ascending Node (Ω)

Value

109.2813

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

198.7634

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

238.32885

1-sigma variation

0.00128

Unit

Perihelion

Value

0.971009

1-sigma variation

Unit

Aphelion

Value

1.323755

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.327281

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.039181

1-sigma variation

Unit

MOID

Value

0.031272

1-sigma variation

Unit

Orbit Period

Value

448.9113

1-sigma variation

Unit

U parameter

Value

4.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.47429E-11	3.92948E-11	8.33712E-10	2.55586E-9	-3.56252E-9	8.57423E-9
e	3.92948E-11	3.45813E-11	7.33553E-10	2.20695E-9	-3.07599E-9	7.52409E-9
i	8.33712E-10	7.33553E-10	1.55831E-8	4.68941E-8	-6.52706E-8	1.59566E-7
Ω	2.55586E-9	2.20695E-9	4.68941E-8	1.90049E-7	-2.49532E-7	4.87646E-7
ω	-3.56252E-9	-3.07599E-9	-6.52706E-8	-2.49532E-7	3.36917E-7	-6.83704E-7
M	8.57423E-9	7.52409E-9	1.59566E-7	4.87646E-7	-6.83704E-7	1.64530E-6

Date of computation: 2023-06-02 11:58 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

23.755

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

Unit

Source

[-]

Diameter

Value

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

[-]

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Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Astrometry Summary

RMS of Residuals
First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

RMS of Residuals

Value

0.573448

Unit

arcsec

Source

[1]

First Observation

Value

2023-03-28.539944

Unit

Source

[2]

Last Observation

Value

2023-06-01.192285

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

67 (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

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 2023HF1 from 1950 to 2123

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1953-06-22 02:08	> 1 d	0.0327813	0.0323243	0.0027950
EARTH	1953-10-31 06:51	> 1 w	0.1941440	0.1619894	0.0113898
EARTH	1964-09-17 16:43	> 1 d	0.0955258	0.0683646	0.0148339
EARTH	1980-06-26 05:39	> 1 d	0.0320658	0.0319591	0.0001891
EARTH	1980-10-24 14:14	> 1 d	0.1864617	0.1809508	0.0018509
EARTH	1991-09-28 06:14	170.2	0.1781252	0.1708834	0.0024248
EARTH	1996-05-25 20:17	136.7	0.1933250	0.1868812	0.0021503
EARTH	2007-08-19 04:04	592.2	0.0592928	0.0588894	0.0001438
EARTH	2023-06-21 17:08	< 1 min	0.0319453	0.0319416	0.0000012
EARTH	2023-11-02 00:42	5.3	0.1958577	0.1958390	0.0000062
EARTH	2034-09-19 19:33	85.8	0.1046280	0.1033380	0.0004323
EARTH	2050-06-15 00:56	247.0	0.0418799	0.0404590	0.0004872
EARTH	2061-07-22 04:35	371.7	0.0474859	0.0470776	0.0001387
EARTH	2072-09-17 18:09	< 1 min	0.0981224	0.0980460	0.0000255
EARTH	2088-06-01 14:20	70.8	0.1161904	0.1143572	0.0006117
EARTH	2099-07-15 22:18	464.3	0.0430197	0.0424322	0.0002005
EARTH	2110-09-26 12:36	44.0	0.1501487	0.1490726	0.0003592

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