Asteroids

2024HQ help

Last update: 2024-10-15 14:31 UTC

Orbital Properties

Epoch

60600.0

MJD

Orbit type

Apollo

Perihelion (q)

0.917

Aphelion (Q)

1.603

Eccentricity (e)

0.272

Inclination (i)

4.2

deg

Orbit period (P)

516.9

Earth MOID

0.00047

U parameter

6.9

Next Earth close approach

Date

2031-08-23

Nominal distance (from Earth center)

0.11748

17574443

Maximum Brightness

27.4

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

29.3

mag

Diameter

4 - 8*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-04-18

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

60600.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.260414

1-sigma variation

0.000200

Unit

Eccentricity (e)

Value

0.272160

1-sigma variation

0.000142

Unit

Inclination (i)

Value

4.2486

1-sigma variation

0.0016

Unit

Long. of Ascending Node (Ω)

Value

30.4819

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

232.5751

1-sigma variation

0.0019

Unit

Mean Anomaly (M)

Value

94.46062

1-sigma variation

0.01937

Unit

Perihelion distance

Value

0.917379

1-sigma variation

Unit

Aphelion distance

Value

1.603449

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.403441

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.001366

1-sigma variation

Unit

MOID

Value

0.000473

1-sigma variation

Unit

Orbit Period

Value

516.8547

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.98300E-8	2.82659E-8	3.17614E-7	-1.88245E-9	-1.33676E-7	-3.86387E-6
e	2.82659E-8	2.00830E-8	2.26922E-7	-1.94707E-9	-8.64340E-8	-2.74553E-6
i	3.17614E-7	2.26922E-7	2.63134E-6	-5.46591E-8	-5.24456E-7	-3.10350E-5
Ω	-1.88245E-9	-1.94707E-9	-5.46591E-8	1.60601E-8	-2.11021E-7	2.72348E-7
ω	-1.33676E-7	-8.64340E-8	-5.24456E-7	-2.11021E-7	3.44409E-6	1.17297E-5
M	-3.86387E-6	-2.74553E-6	-3.10350E-5	2.72348E-7	1.17297E-5	3.75342E-4

Date of computation: 2024-10-10 15:07 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

29.299

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

4 - 8*

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
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

0.7

Unit

Source

[1]

Unobserved

Value

180

Unit

Source

[1]

Normalized RMS of residuals

Value

0.752551

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-04-18.267799

Unit

Source

[2]

Last Observation

Value

2024-04-18.932832

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

18 (1)

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 2024HQ 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	1952-06-21 02:07	> 1 mo	0.1028286	0.1018836	3.7953337
EARTH	1955-04-17 14:05	> 1 mo	0.0176565	0.0024623	22.1877850
EARTH	1980-07-28 11:45	> 1 mo	0.0747258	0.0674335	0.8119327
EARTH	1983-04-18 10:56	> 1 w	0.0117874	0.0019020	0.2197110
EARTH	1999-08-20 10:36	> 1 d	0.1546865	0.1163735	0.0133118
EARTH	2002-04-24 23:20	> 1 d	0.0276071	0.0024003	0.0222586
EARTH	2021-08-12 13:22	512.8	0.0819369	0.0757527	0.0022739
EARTH	2024-04-19 08:53	< 1 min	0.0021336	0.0021314	0.0000007
EARTH	2031-08-23 03:07	905.8	0.1174779	0.0946525	0.0082074
EARTH	2041-04-12 00:21	> 1 d	0.0817134	0.0156247	0.0220839
EARTH	2048-08-12 20:38	> 1 d	0.0711558	0.0706938	0.0015195
EARTH	2065-06-24 23:41	> 1 w	0.1155458	0.1150807	0.0003991
EARTH	2082-04-28 11:33	> 1 d	0.0431282	0.0155435	0.0092217
EARTH	2089-08-28 04:32	575.8	0.1926150	0.1603224	0.0109301
EARTH	2099-04-26 00:37	> 1 w	0.0312343	0.0006894	0.0350377
MARS	2099-11-07 21:18	> 1 d	0.0235033	0.0230213	0.0047096
EARTH	2116-07-17 13:30	> 1 mo	0.1042887	0.0794932	0.0608831

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
321.37881855	106.93459801	0.00112939	MINIMUM
41.71531685	212.83115519	0.06695231	MINIMUM
5.58431058	165.32433971	0.10595429	SADDLE
181.31657369	339.29973858	0.67882243	SADDLE
1.43744193	339.67850605	1.90695254	SADDLE
180.56249843	158.74886301	2.67401360	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2024HQ

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2078-04-20.333	80143.333	4.991	1.56 ± 0.002	1.86E5	1.83E-11	6.26E-14	-12.93
2079-04-20.718	80508.718	3.085	1.54 ± 0.003	5.48E4	1.24E-7	4.22E-10	-9.11
2080-04-19.911	80873.911	3.467	0.87 ± 0.000	7.06E5	4.50E-9	1.54E-11	-10.55
2082-04-20.435	81604.435	1.314	0.98 ± 0.002	2.16E3	2.40E-4	8.22E-7	-5.84
2084-04-19.841	82334.841	3.717	0.17 ± 0.000	1.29E8	1.12E-11	3.84E-14	-13.19
2084-04-19.904	82334.904	4.057	1.04 ± 0.002	2.43E5	1.31E-9	4.50E-12	-11.12
2086-04-20.322	83065.322	1.329	1.19 ± 0.000	1.65E6	3.58E-7	1.22E-9	-8.70
2086-04-20.449	83065.449	3.139	0.42 ± 0.002	5.14E4	2.00E-7	6.83E-10	-8.95
2089-04-20.100	84161.100	1.407	1.56 ± 0.002	1.00E5	2.84E-6	9.69E-9	-7.82
2090-04-20.417	84526.417	3.627	0.22 ± 0.253	4.00E7	4.97E-11	1.70E-13	-12.58
2091-04-20.560	84891.560	1.323	0.76 ± 0.008	1.49E7	3.75E-8	1.28E-10	-9.71
2091-04-20.565	84891.565	-1.684	0.50 ± 0.004	1.49E7	2.28E-8	7.78E-11	-9.93
2092-04-19.769	85256.769	-1.393	1.44 ± 0.001	5.67E4	6.35E-6	2.16E-8	-7.49
2092-04-19.804	85256.804	1.227	1.70 ± 0.002	1.59E5	4.31E-6	1.47E-8	-7.65
2093-04-20.118	85622.118	-1.795	0.59 ± 0.002	3.15E5	8.75E-7	2.98E-9	-8.35
2093-04-20.167	85622.167	1.347	1.30 ± 0.000	1.37E6	3.02E-7	1.03E-9	-8.82
2093-04-20.177	85622.177	3.147	0.45 ± 0.005	4.86E5	2.10E-8	7.17E-11	-9.97
2093-04-20.261	85622.261	3.207	1.61 ± 0.004	4.32E4	9.48E-8	3.24E-10	-9.32
2095-04-20.593	86352.593	-1.533	1.21 ± 0.000	2.50E5	1.77E-6	6.04E-9	-8.06
2095-04-20.630	86352.630	1.272	1.06 ± 0.002	8.54E5	6.18E-7	2.11E-9	-8.52
2095-04-20.764	86352.764	4.630	1.47 ± 0.006	2.21E5	8.71E-11	2.98E-13	-12.37
2096-04-19.649	86717.649	1.226	1.77 ± 0.310	2.05E8	1.37E-9	4.67E-12	-11.18
2096-04-19.906	86717.906	2.482	1.74 ± 0.002	2.47E4	8.50E-7	2.91E-9	-8.38
2103-04-21.521	89274.521	1.320	0.91 ± 0.000	3.43E7	1.78E-8	6.08E-11	-10.10
2103-04-21.589	89274.589	3.917	0.64 ± 0.002	1.54E5	4.14E-9	1.42E-11	-10.74


Based on 18 optical observations (of which 1 are rejected as outliers) from 2024/04/18.268 to 2024/04/18.933.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.83 and 1.83 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20240419 140817.850 UTC.

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