Asteroids

2019JH7 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.701

Aphelion (Q)

1.276

Eccentricity (e)

0.291

Inclination (i)

0.9

deg

Orbit period (P)

359.0

Earth MOID

0.00117

U parameter

5.4

Next Earth close approach

Date

2062-12-29

Nominal distance (from Earth center)

0.16171

24191410

Maximum Brightness

28.8

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

29.5

mag

Diameter

3 - 7*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-05-14

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

0.988512

1-sigma variation

0.000011

Unit

Eccentricity (e)

Value

0.291238

1-sigma variation

0.000017

Unit

Inclination (i)

Value

0.8558

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

58.7180

1-sigma variation

0.0282

Unit

Arg. of Perihelion (ω)

Value

286.7989

1-sigma variation

0.0294

Unit

Mean Anomaly (M)

Value

145.01390

1-sigma variation

0.02090

Unit

Perihelion distance

Value

0.700620

1-sigma variation

Unit

Aphelion distance

Value

1.276404

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.154311

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.024580

1-sigma variation

Unit

MOID

Value

0.001173

1-sigma variation

Unit

Orbit Period

Value

358.9811

1-sigma variation

Unit

U parameter

Value

5.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.17902E-10	1.89798E-10	-1.30358E-9	3.06669E-7	-3.18990E-7	-2.26920E-7
e	1.89798E-10	3.05780E-10	-2.09843E-9	4.93656E-7	-5.13479E-7	-3.65277E-7
i	-1.30358E-9	-2.09843E-9	1.45580E-8	-3.39113E-6	3.52736E-6	2.50875E-6
Ω	3.06669E-7	4.93656E-7	-3.39113E-6	7.97660E-4	-8.29710E-4	-5.90227E-4
ω	-3.18990E-7	-5.13479E-7	3.52736E-6	-8.29710E-4	8.63048E-4	6.13943E-4
M	-2.26920E-7	-3.65277E-7	2.50875E-6	-5.90227E-4	6.13943E-4	4.36740E-4

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

29.54

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

3 - 7*

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

Unit

Source

[1]

Unobserved

Value

2325

Unit

Source

[1]

Normalized RMS of residuals

Value

0.615072

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-05-13.2651

Unit

Source

[2]

Last Observation

Value

2019-05-16.008371

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

79 (4)

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 2019JH7 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	1950-05-10 21:15	645.5	0.1342256	0.0875940	0.0155439
EARTH	1951-05-18 14:04	183.0	0.0660747	0.0271350	0.0129874
EARTH	1956-12-10 15:52	366.3	0.0157716	0.0087212	0.0060755
EARTH	1957-12-18 09:56	370.0	0.1775086	0.1562049	0.0071026
EARTH	1984-05-11 10:58	54.1	0.0961113	0.0936979	0.0008045
EARTH	1985-05-17 17:26	15.5	0.0886900	0.0856436	0.0010154
EARTH	1990-12-09 12:27	29.2	0.0804526	0.0746515	0.0019347
EARTH	1991-12-16 06:49	106.6	0.1100818	0.1041662	0.0019723
EARTH	2018-05-08 11:47	2.9	0.1828620	0.1827009	0.0000537
EARTH	2019-05-16 00:05	< 1 s	0.0004782	0.0004782	0.0000000
EARTH	2020-05-12 16:24	3.3	0.0774214	0.0772131	0.0000694
VENUS	2020-07-04 06:41	7.8	0.0378338	0.0376790	0.0000517
EARTH	2021-05-09 09:06	6.1	0.1687091	0.1683322	0.0001256
VENUS	2025-06-07 20:09	76.1	0.0282708	0.0277445	0.0001806
EARTH	2062-12-29 17:15	13.8	0.1617096	0.1609725	0.0002457
EARTH	2063-12-25 22:33	11.0	0.0534004	0.0528328	0.0001892
EARTH	2064-12-22 16:30	3.1	0.0499641	0.0496352	0.0001096
EARTH	2066-01-03 23:17	3.3	0.1519803	0.1519428	0.0000125
VENUS	2071-09-18 08:30	103.8	0.0358990	0.0349740	0.0003166
EARTH	2074-05-02 09:38	286.6	0.1648255	0.1631990	0.0005422
EARTH	2075-05-16 23:39	26.1	0.0830284	0.0807437	0.0007616
EARTH	2076-05-15 12:48	34.9	0.0030877	0.0011383	0.0007657
VENUS	2076-08-25 05:17	515.2	0.0427878	0.0327895	0.0034787
EARTH	2077-05-09 13:05	904.5	0.1877838	0.1269928	0.0202643
VENUS	2094-12-12 18:12	> 1 mo	0.0276678	0.0222696	0.2179055
EARTH	2101-01-03 23:40	> 1 w	0.1782076	0.0117542	0.5017684
VENUS	2101-10-03 17:11	> 1 mo	0.0390486	0.0204260	0.2470346
EARTH	2101-12-28 13:48	> 1 w	0.0229032	0.0094802	0.4729762
EARTH	2103-01-25 06:56	> 1 mo	0.1989097	0.0071432	0.1685252
EARTH	2106-04-23 01:27	> 1 mo	0.1907336	0.0105292	0.3192898
EARTH	2107-05-17 05:13	> 1 w	0.0104704	0.0015586	0.7236938
EARTH	2108-05-10 15:30	> 1 w	0.1639368	0.0006174	1.1145012
VENUS	2108-07-20 16:32	> 1 mo	0.0452294	0.0451663	0.0043794

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
265.81156739	131.55566383	0.00066947	MINIMUM
88.78729191	349.16113597	0.00822826	MINIMUM
177.87947477	60.97625919	0.28671841	SADDLE
356.17724087	239.17497400	0.30711445	SADDLE
356.26336273	59.27325811	1.69283792	SADDLE
177.88954078	240.97358348	2.28595974	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2019JH7

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2114-05-17.461	93318.461	1.434	0.000	1.24 ± 0.001	9.23E5	4.47E-7	2.04E-3	-8.92	0
2118-05-17.407	94779.407	3.579	0.000	0.60 ± 0.001	5.26E5	3.72E-9	2.04E-3	-11.02	0


Based on 79 optical observations (of which 4 are rejected as outliers) from 2019/05/13.265 to 2019/05/16.008.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.59 and 1.59 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250805 130500.123 UTC.

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Download Impactor Table as: