Asteroids

2017UD5 help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.988

Aphelion (Q)

1.348

Eccentricity (e)

0.154

Inclination (i)

10.7

deg

Orbit period (P)

461.1

Earth MOID

0.01150

U parameter

7.8

Next Earth close approach

Date

2041-10-04

Nominal distance (from Earth center)

0.0767

11474382

Maximum Brightness

23.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-10-22

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.168066

1-sigma variation

0.000524

Unit

Eccentricity (e)

Value

0.154114

1-sigma variation

0.000400

Unit

Inclination (i)

Value

10.7165

1-sigma variation

0.0200

Unit

Long. of Ascending Node (Ω)

Value

21.1603

1-sigma variation

0.0029

Unit

Arg. of Perihelion (ω)

Value

326.2719

1-sigma variation

0.0057

Unit

Mean Anomaly (M)

Value

330.41586

1-sigma variation

1.71243

Unit

Perihelion distance

Value

0.988051

1-sigma variation

Unit

Aphelion distance

Value

1.348081

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.012804

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.306150

1-sigma variation

Unit

MOID

Value

0.011499

1-sigma variation

Unit

Orbit Period

Value

461.1045

1-sigma variation

Unit

U parameter

Value

7.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.74495E-7	2.09473E-7	1.04674E-5	-1.53511E-6	1.34989E-6	-8.97180E-4
e	2.09473E-7	1.59891E-7	7.99364E-6	-1.17052E-6	9.98911E-7	-6.84635E-4
i	1.04674E-5	7.99364E-6	4.00037E-4	-5.83929E-5	4.67411E-5	-3.42092E-2
Ω	-1.53511E-6	-1.17052E-6	-5.83929E-5	8.61014E-6	-8.32691E-6	5.01796E-3
ω	1.34989E-6	9.98911E-7	4.67411E-5	-8.32691E-6	3.21118E-5	-4.42881E-3
M	-8.97180E-4	-6.84635E-4	-3.42092E-2	5.01796E-3	-4.42881E-3	2.93242E0

Date of computation: 2026-03-17 23:26 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

25.981

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

17 - 40*

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

3089

Unit

Source

[1]

Normalized RMS of residuals

Value

0.588848

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-10-22.09797

Unit

Source

[2]

Last Observation

Value

2017-10-26.0773

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

39 (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

[-]

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

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 2017UD5 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	1978-10-03 04:42	> 1 w	0.0915462	0.0010319	0.1899487
EARTH	1983-10-15 08:59	> 1 w	0.0259840	0.0119721	0.1045298
EARTH	2012-09-11 21:34	> 1 d	0.1760708	0.1188091	0.0198024
EARTH	2017-10-15 16:51	< 1 min	0.0345882	0.0343829	0.0000684
EARTH	2041-10-04 15:10	> 1 w	0.0767015	0.0026316	0.0933628
EARTH	2046-10-26 00:18	> 1 d	0.1905537	0.0033111	0.0771371
EARTH	2070-10-08 09:18	> 1 d	0.0498616	0.0080150	0.0533993
EARTH	2075-10-25 06:06	> 1 d	0.1706934	0.0794331	0.0304220
EARTH	2104-10-09 14:12	> 1 w	0.0435743	0.0086379	0.1179908
EARTH	2109-10-22 18:27	762.4	0.1212628	0.1018142	0.0064829

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
27.70314558	279.27376397	0.01178336	MINIMUM
158.97783619	48.02665029	0.38553397	SADDLE
351.39270700	57.43880146	1.97728040	SADDLE
178.31936088	244.50059542	2.35274920	MAXIMUM

Download:

MOID Plots

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