Asteroids

2024HZ help

Last update: 2024-05-03 19:05 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.787

Aphelion (Q)

1.268

Eccentricity (e)

0.234

Inclination (i)

5.4

deg

Orbit period (P)

380.5

Earth MOID

0.00228

U parameter

6.3

Next Earth close approach

Date

2025-04-24

Nominal distance (from Earth center)

0.15464

23133979

Maximum Brightness

27.7

mag

Risk

Object is in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

28.5

mag

Diameter

5 - 12*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-04-20

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)
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

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.027648

1-sigma variation

0.000047

Unit

Eccentricity (e)

Value

0.234357

1-sigma variation

0.000139

Unit

Inclination (i)

Value

5.3742

1-sigma variation

0.0041

Unit

Long. of Ascending Node (Ω)

Value

209.1058

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

260.5003

1-sigma variation

0.0052

Unit

Mean Anomaly (M)

Value

54.57616

1-sigma variation

0.01448

Unit

Perihelion distance

Value

0.786812

1-sigma variation

Unit

Aphelion distance

Value

1.268484

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.005938

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.059398

1-sigma variation

Unit

MOID

Value

0.002283

1-sigma variation

Unit

Orbit Period

Value

380.5091

1-sigma variation

Unit

U parameter

Value

6.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.24337E-9	5.98506E-9	1.52480E-7	1.45796E-9	4.40586E-8	-6.83587E-7
e	5.98506E-9	1.92100E-8	5.48677E-7	-1.26908E-8	-1.74500E-7	-1.89263E-6
i	1.52480E-7	5.48677E-7	1.65857E-5	-6.28148E-7	-9.79146E-6	-4.94680E-5
Ω	1.45796E-9	-1.26908E-8	-6.28148E-7	8.71982E-8	1.52365E-6	-9.51293E-8
ω	4.40586E-8	-1.74500E-7	-9.79146E-6	1.52365E-6	2.71731E-5	-7.22615E-6
M	-6.83587E-7	-1.89263E-6	-4.94680E-5	-9.51293E-8	-7.22615E-6	2.09772E-4

Date of computation: 2024-04-23 11:53 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

28.545

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

5 - 12*

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 ODIM	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

0.728781

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-04-20.229436

Unit

Source

[2]

Last Observation

Value

2024-04-21.307888

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

24 (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 2024HZ from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1969-10-06 18:08	> 1 w	0.0318833	0.0249003	0.0634762
EARTH	1970-12-04 21:26	> 1 mo	0.1846097	0.1242319	0.0697628
EARTH	1973-04-16 03:01	> 1 w	0.0434640	0.0032837	0.4029031
EARTH	1974-04-26 12:01	> 1 w	0.1962561	0.0013289	0.3909601
EARTH	1995-09-28 09:30	> 1 d	0.1817132	0.0316483	0.0694223
EARTH	1996-10-12 01:30	> 1 d	0.0665302	0.0255307	0.0498253
EARTH	1999-02-17 23:07	> 1 d	0.1883618	0.1861479	0.0007457
EARTH	1999-05-22 05:45	> 1 d	0.1979771	0.1888955	0.0030335
EARTH	2000-04-18 02:26	1025.2	0.0200367	0.0034497	0.0164572
EARTH	2020-10-07 14:18	84.6	0.0278959	0.0265308	0.0004996
EARTH	2021-12-10 01:27	606.6	0.1905503	0.1900720	0.0001596
EARTH	2023-02-08 06:51	313.0	0.1992247	0.1986668	0.0001860
EARTH	2024-04-17 14:10	1.2	0.0031211	0.0031141	0.0000023
EARTH	2025-04-24 06:45	29.6	0.1546411	0.1530727	0.0005228
EARTH	2056-10-02 16:41	922.5	0.0464382	0.0325083	0.0080967
EARTH	2057-10-28 18:38	> 1 d	0.1302069	0.1055687	0.0084800
EARTH	2061-03-09 11:33	> 1 d	0.1644234	0.1510430	0.0044883
EARTH	2061-05-07 17:43	> 1 d	0.1616684	0.1461196	0.0051954
EARTH	2062-04-18 00:41	339.9	0.0045273	0.0016500	0.0054153
EARTH	2063-04-20 20:59	> 1 d	0.0682329	0.0016319	0.0873624
EARTH	2064-04-23 10:42	> 1 d	0.1473907	0.0008972	0.1697012
EARTH	2124-09-24 05:45	> 1 mo	0.1483003	0.0407087	3.6072236

Download as:

2024HZ

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2109-04-19.348	91464.348	0.691	1.02 ± 0.118	7.12E6	1.63E-7	1.56E-9	-8.81
2117-04-19.253	94386.253	0.640	1.11 ± 0.110	1.23E8	7.90E-9	7.53E-11	-10.16
2119-04-19.705	95116.705	1.022	0.14 ± 0.000	7.92E8	1.11E-9	1.06E-11	-11.03
2119-04-19.835	95116.835	0.917	0.68 ± 0.000	1.29E8	7.10E-9	6.78E-11	-10.22
2121-04-19.350	95847.350	1.414	0.92 ± 0.047	7.80E5	6.08E-7	5.80E-9	-8.30


Based on 24 optical observations (of which 0 are rejected as outliers) from 2024/04/20.229 to 2024/04/21.308.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.86 and 1.86 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20240422 100406.285 UTC.

Download this part as:

Download Impactor Table as: