Asteroids

2017QL33 help

Last update: 2025-03-29 00:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.955

Aphelion (Q)

2.720

Eccentricity (e)

0.480

Inclination (i)

1.7

deg

Orbit period (P)

909.9

Earth MOID

0.02053

U parameter

0.0

Next Earth close approach

Date

2027-11-02

Nominal distance (from Earth center)

0.02079

3110659

Maximum Brightness

15.6

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

21.3

mag

Diameter

140 - 300*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-08-28

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.837661

1-sigma variation

1.401E-9

Unit

Eccentricity (e)

Value

0.480265

1-sigma variation

5.249E-9

Unit

Inclination (i)

Value

1.7134

1-sigma variation

4.881E-7

Unit

Long. of Ascending Node (Ω)

Value

357.1876

1-sigma variation

4.807E-5

Unit

Arg. of Perihelion (ω)

Value

71.8505

1-sigma variation

4.813E-5

Unit

Mean Anomaly (M)

Value

350.05420

1-sigma variation

2.318E-6

Unit

Perihelion distance

Value

0.955096

1-sigma variation

Unit

Aphelion distance

Value

2.720227

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.225548

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.667590

1-sigma variation

Unit

MOID

Value

0.020528

1-sigma variation

Unit

Orbit Period

Value

909.9063

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.96317E-18	-1.81776E-18	7.64844E-17	2.12876E-15	5.76297E-16	-3.11354E-15
e	-1.81776E-18	2.75542E-17	1.21356E-15	2.48057E-14	-3.32451E-14	4.55915E-15
i	7.64844E-17	1.21356E-15	2.38242E-13	-1.32056E-11	1.33024E-11	-9.27437E-14
Ω	2.12876E-15	2.48057E-14	-1.32056E-11	2.31061E-9	-2.30853E-9	3.73388E-12
ω	5.76297E-16	-3.32451E-14	1.33024E-11	-2.30853E-9	2.31630E-9	-9.50246E-12
M	-3.11354E-15	4.55915E-15	-9.27437E-14	3.73388E-12	-9.50246E-12	5.37347E-12

Date of computation: 2025-03-29 00:36 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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

21.318

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

140 - 300*

Unit

Source

[4]

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]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

3848

Unit

Source

[1]

Unobserved

Value

802

Unit

Source

[1]

Normalized RMS of residuals

Value

0.519053

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2012-08-17.461284

Unit

Source

[2]

Last Observation

Value

2023-03-01.253155

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

493 (5)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2017-12-18

Unit

Source

[3]

Last Observation

Value

2017-12-29

Unit

Source

[3]

Delay (Discarded)

Value

4 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

6 (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

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 2017QL33 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	2013-01-18 08:14	< 1 s	0.1831907	0.1831904	0.0000001
EARTH	2017-12-30 05:11	< 1 s	0.0340413	0.0340412	0.0000000
EARTH	2022-12-03 12:32	< 1 min	0.0410181	0.0410181	0.0000000
EARTH	2027-11-02 16:16	< 1 min	0.0207935	0.0207934	0.0000000
EARTH	2032-10-13 18:25	< 1 min	0.1377004	0.1376989	0.0000005
MARS	2045-01-22 16:14	< 1 min	0.0439524	0.0439502	0.0000007
EARTH	2100-01-20 00:13	< 1 min	0.1858070	0.1857972	0.0000033
EARTH	2105-01-03 10:30	< 1 min	0.0408666	0.0408614	0.0000018
EARTH	2109-12-12 22:01	< 1 min	0.0374027	0.0374017	0.0000003
MARS	2114-08-31 23:26	< 1 s	0.0456870	0.0456869	0.0000000
EARTH	2114-11-11 21:28	< 1 s	0.0272203	0.0272202	0.0000000
EARTH	2119-10-27 21:19	< 1 min	0.0431926	0.0431889	0.0000012
EARTH	2124-10-11 17:52	< 1 min	0.1840868	0.1840817	0.0000017

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
342.73960812	298.87709658	0.02052801	MINIMUM
14.72749410	351.55170104	0.02931625	MINIMUM
359.91905549	327.18624920	0.04163536	SADDLE
179.66450879	146.40710423	1.70731049	SADDLE
358.99197441	145.65773436	1.96840995	SADDLE
179.64947616	326.40335700	3.70623317	MAXIMUM

Download:

MOID Plots

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