Asteroids

2017DR109 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.765

Aphelion (Q)

1.251

Eccentricity (e)

0.241

Inclination (i)

3.1

deg

Orbit period (P)

369.4

Earth MOID

0.00580

U parameter

6.3

Next Earth close approach

Date

2094-07-27

Nominal distance (from Earth center)

0.16107

24095024

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.8

mag

Diameter

7 - 16*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-02-27

Observatory

Catalina Sky 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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.007635

1-sigma variation

0.000043

Unit

Eccentricity (e)

Value

0.241270

1-sigma variation

0.000317

Unit

Inclination (i)

Value

3.1432

1-sigma variation

0.0064

Unit

Long. of Ascending Node (Ω)

Value

340.9146

1-sigma variation

0.0162

Unit

Arg. of Perihelion (ω)

Value

73.8966

1-sigma variation

0.0471

Unit

Mean Anomaly (M)

Value

115.68377

1-sigma variation

0.15057

Unit

Perihelion distance

Value

0.764523

1-sigma variation

Unit

Aphelion distance

Value

1.250747

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.118941

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.025926

1-sigma variation

Unit

MOID

Value

0.005805

1-sigma variation

Unit

Orbit Period

Value

369.4480

1-sigma variation

Unit

U parameter

Value

6.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.85244E-9	-1.36271E-8	2.77001E-7	-6.97438E-7	2.02897E-6	-6.48044E-6
e	-1.36271E-8	1.00414E-7	-2.03720E-6	5.13010E-6	-1.49354E-5	4.76678E-5
i	2.77001E-7	-2.03720E-6	4.14265E-5	-1.04294E-4	3.03369E-4	-9.69043E-4
Ω	-6.97438E-7	5.13010E-6	-1.04294E-4	2.62586E-4	-7.63876E-4	2.43987E-3
ω	2.02897E-6	-1.49354E-5	3.03369E-4	-7.63876E-4	2.22289E-3	-7.09777E-3
M	-6.48044E-6	4.76678E-5	-9.69043E-4	2.43987E-3	-7.09777E-3	2.26708E-2

Date of computation: 2025-07-29 02:36 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

27.788

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

7 - 16*

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

3090

Unit

Source

[1]

Normalized RMS of residuals

Value

0.665415

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-02-27.24563

Unit

Source

[2]

Last Observation

Value

2017-03-04.39266

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

29 (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

Close Approaches for 2017DR109 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	2013-03-02 00:16	19.1	0.1657501	0.1646391	0.0003704
EARTH	2014-02-27 23:09	26.9	0.1110202	0.1094440	0.0005254
EARTH	2015-02-26 07:54	32.5	0.0614024	0.0594291	0.0006579
EARTH	2016-02-25 03:26	30.4	0.0197431	0.0177214	0.0006779
EARTH	2017-02-23 20:32	< 1 min	0.0059633	0.0059412	0.0000074
EARTH	2018-02-24 05:14	29.2	0.0094314	0.0079529	0.0005235
EARTH	2019-02-26 04:48	10.3	0.0584306	0.0578502	0.0001935
EARTH	2020-02-28 18:52	17.3	0.1173895	0.1164483	0.0003138
EARTH	2021-03-02 16:29	42.1	0.1795536	0.1771231	0.0008102
EARTH	2094-07-27 12:09	296.9	0.1610653	0.1422618	0.0062813
EARTH	2095-07-30 13:34	317.1	0.1021835	0.0839203	0.0061439
EARTH	2096-08-01 10:49	311.2	0.0492965	0.0359121	0.0049734
EARTH	2097-08-03 21:50	233.7	0.0296492	0.0282064	0.0015542
EARTH	2098-08-06 10:17	273.9	0.0665025	0.0500318	0.0057099
EARTH	2099-08-08 16:35	26.9	0.1164334	0.0959056	0.0068904
EARTH	2100-07-11 17:28	> 1 d	0.1630600	0.1472957	0.0052578
EARTH	2100-09-12 05:07	> 1 d	0.1607461	0.1463923	0.0048261
EARTH	2101-06-26 21:25	> 1 d	0.1951516	0.1833525	0.0039349
EARTH	2101-09-29 07:41	> 1 d	0.1892774	0.1789033	0.0034809
EARTH	2110-01-06 20:02	> 1 d	0.1789199	0.1651774	0.0045864
EARTH	2110-03-27 01:08	> 1 d	0.1737254	0.1576590	0.0053749
EARTH	2111-03-10 12:36	> 1 d	0.1316173	0.1085833	0.0076998
EARTH	2112-02-25 04:41	622.1	0.0762449	0.0494630	0.0089428
EARTH	2113-02-24 04:19	228.0	0.0221612	0.0047799	0.0078294
EARTH	2114-02-25 08:39	29.2	0.0142418	0.0134547	0.0002626
EARTH	2115-02-28 04:46	503.0	0.0841549	0.0595362	0.0082121
EARTH	2116-03-02 14:26	890.9	0.1594985	0.1115246	0.0159940

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
86.12811920	52.01782518	0.00580475	MINIMUM
269.83798342	208.94780569	0.02860861	MINIMUM
357.19750857	309.89864077	0.22916432	SADDLE
178.55138509	130.85004220	0.24716057	SADDLE
356.24553631	128.71556070	1.77447238	SADDLE
177.62932102	310.13412053	2.23909502	MAXIMUM

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MOID Plots

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