Asteroids

2019SU3 help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.999

Aphelion (Q)

1.242

Eccentricity (e)

0.108

Inclination (i)

1.3

deg

Orbit period (P)

433.1

Earth MOID

0.00249

U parameter

1.9

Next Earth close approach

Date

2038-07-06

Nominal distance (from Earth center)

0.07468

11171736

Maximum Brightness

24.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.2

mag

Diameter

9 - 21*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-09-23

Observatory

ATLAS-HKO, Haleakala

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.120308

1-sigma variation

8.589E-8

Unit

Eccentricity (e)

Value

0.108455

1-sigma variation

6.730E-8

Unit

Inclination (i)

Value

1.2849

1-sigma variation

1.522E-6

Unit

Long. of Ascending Node (Ω)

Value

3.2147

1-sigma variation

3.948E-6

Unit

Arg. of Perihelion (ω)

Value

332.3279

1-sigma variation

3.529E-5

Unit

Mean Anomaly (M)

Value

255.80547

1-sigma variation

0.00026

Unit

Perihelion distance

Value

0.998806

1-sigma variation

Unit

Aphelion distance

Value

1.241811

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.006855

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.228250

1-sigma variation

Unit

MOID

Value

0.002493

1-sigma variation

Unit

Orbit Period

Value

433.1166

1-sigma variation

Unit

U parameter

Value

1.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.37642E-15	5.28141E-15	2.10668E-14	2.49180E-15	1.44972E-12	-2.25149E-11
e	5.28141E-15	4.52981E-15	2.35452E-14	2.42427E-15	2.02602E-13	-1.54756E-11
i	2.10668E-14	2.35452E-14	2.31535E-12	1.30692E-12	-7.10422E-12	-5.66021E-11
Ω	2.49180E-15	2.42427E-15	1.30692E-12	1.55899E-11	-1.67365E-11	-6.31218E-12
ω	1.44972E-12	2.02602E-13	-7.10422E-12	-1.67365E-11	1.24524E-9	-5.15380E-9
M	-2.25149E-11	-1.54756E-11	-5.66021E-11	-6.31218E-12	-5.15380E-9	6.92843E-8

Date of computation: 2026-07-30 14:25 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

27.243

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

9 - 21*

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

2495

Unit

Source

[1]

Normalized RMS of residuals

Value

0.556674

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-09-23.249638

Unit

Source

[2]

Last Observation

Value

2019-10-23.31454

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

185 (3)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2019-10-01

Unit

Source

[3]

Last Observation

Value

2019-10-01

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

2 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

Filters

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Final Date: *

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Max residual (arcsec):

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Computation parameters

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Initial Date: *

Final Date: *

Output option:

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Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2019SU3 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1951-06-22 16:13	> 1 d	0.1750252	0.0624987	0.0378715
EARTH	1951-12-31 17:28	> 1 mo	0.1867523	0.1526734	0.0113638
EARTH	1966-04-26 02:19	> 1 w	0.1611138	0.1342683	0.0090571
EARTH	1966-10-12 12:59	> 1 d	0.1047609	0.0386350	0.0220484
EARTH	1973-07-03 10:29	1360.1	0.0473462	0.0279524	0.0068809
EARTH	1973-11-27 04:56	> 1 w	0.1318092	0.1185777	0.0044130
EARTH	1988-09-04 16:02	451.6	0.0182075	0.0178154	0.0001307
EARTH	2004-01-14 20:14	147.1	0.1983928	0.1983190	0.0000246
EARTH	2011-09-05 20:18	11.1	0.0175950	0.0175827	0.0000041
EARTH	2019-05-24 18:27	1.2	0.1060052	0.1060049	0.0000001
EARTH	2019-09-24 04:02	< 1 s	0.0060693	0.0060693	0.0000000
EARTH	2038-07-06 09:30	1.7	0.0746784	0.0746423	0.0000121
EARTH	2038-11-26 02:16	29.6	0.1474212	0.1473990	0.0000074
EARTH	2051-08-06 15:07	30.4	0.0189842	0.0189836	0.0000002
EARTH	2064-06-29 13:25	17.2	0.1227128	0.1219632	0.0002499
EARTH	2064-12-10 07:56	453.5	0.1711615	0.1708254	0.0001120
EARTH	2084-09-27 11:46	16.4	0.0216758	0.0215392	0.0000455
EARTH	2090-07-01 04:09	62.8	0.1548407	0.1520525	0.0009296
EARTH	2090-12-16 14:50	> 1 d	0.1878060	0.1866930	0.0003710
EARTH	2109-05-09 22:54	> 1 d	0.1685555	0.1643797	0.0013945
EARTH	2109-10-10 19:22	221.5	0.1121402	0.1033882	0.0029176
EARTH	2115-07-14 08:17	320.8	0.0466667	0.0431803	0.0011737
EARTH	2115-11-10 10:14	> 1 d	0.1268133	0.1237510	0.0010209

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
19.54292899	253.79335369	0.00249285	MINIMUM
174.53642189	45.69535145	0.25309270	SADDLE
353.81513623	44.91266928	1.98770868	SADDLE
174.91348939	226.01782034	2.25291399	MAXIMUM

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MOID Plots

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