Asteroids

2019QB1 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.910

Aphelion (Q)

3.236

Eccentricity (e)

0.561

Inclination (i)

2.7

deg

Orbit period (P)

1090.0

Earth MOID

0.00022

U parameter

6.5

Next Earth close approach

Date

2028-07-03

Nominal distance (from Earth center)

0.10807

16167580

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.4

mag

Diameter

9 - 20*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-08-22

Observatory

Pan-STARRS 2, 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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.072780

1-sigma variation

0.000106

Unit

Eccentricity (e)

Value

0.561144

1-sigma variation

0.000077

Unit

Inclination (i)

Value

2.6812

1-sigma variation

0.0029

Unit

Long. of Ascending Node (Ω)

Value

327.0036

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

316.0856

1-sigma variation

0.0425

Unit

Mean Anomaly (M)

Value

44.34053

1-sigma variation

0.45152

Unit

Perihelion distance

Value

0.909652

1-sigma variation

Unit

Aphelion distance

Value

3.235909

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.001348

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.394271

1-sigma variation

Unit

MOID

Value

0.000215

1-sigma variation

Unit

Orbit Period

Value

1090.0048

1-sigma variation

Unit

U parameter

Value

6.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.12583E-8	-8.13930E-9	-3.07095E-7	-2.83516E-8	4.51262E-6	4.79082E-5
e	-8.13930E-9	5.88440E-9	2.22017E-7	2.05071E-8	-3.26244E-6	-3.46357E-5
i	-3.07095E-7	2.22017E-7	8.37672E-6	7.73419E-7	-1.23092E-4	-1.30680E-3
Ω	-2.83516E-8	2.05071E-8	7.73419E-7	7.64493E-8	-1.13679E-5	-1.20647E-4
ω	4.51262E-6	-3.26244E-6	-1.23092E-4	-1.13679E-5	1.80877E-3	1.92028E-2
M	4.79082E-5	-3.46357E-5	-1.30680E-3	-1.20647E-4	1.92028E-2	2.03867E-1

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

27.376

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

9 - 20*

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

2204

Unit

Source

[1]

Normalized RMS of residuals

Value

0.491385

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-08-22.52336

Unit

Source

[2]

Last Observation

Value

2019-09-04.516274

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

36 (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 2019QB1 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	1963-08-30 01:39	> 1 w	0.0906206	0.0007336	0.2436364
EARTH	1996-06-08 03:36	> 1 mo	0.0699553	0.0450919	0.0749866
EARTH	2019-08-20 11:54	< 1 min	0.0008271	0.0008253	0.0000006
EARTH	2022-08-14 00:13	> 1 d	0.0350933	0.0004573	0.0180727
EARTH	2025-07-24 17:55	> 1 d	0.0944910	0.0661462	0.0095195
EARTH	2028-07-03 12:28	> 1 d	0.1080736	0.1080141	0.0001017
EARTH	2031-06-14 10:33	> 1 d	0.0952674	0.0753484	0.0071811
EARTH	2034-05-29 15:58	> 1 d	0.0625987	0.0480922	0.0074860
EARTH	2037-05-17 12:02	> 1 d	0.0526665	0.0475685	0.0046301
EARTH	2040-05-08 22:22	1056.2	0.1222533	0.0939011	0.0097349

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
24.13704340	225.48472864	0.00003228	MINIMUM
335.97588128	136.51018661	0.04733091	MINIMUM
359.13124117	179.26889206	0.11124413	SADDLE
359.93092742	0.80472248	1.89307704	SADDLE
179.95308530	0.89148970	2.25433079	SADDLE
180.01513498	180.92406252	4.25312623	MAXIMUM

Download:

MOID Plots

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