Asteroids

2017BL30 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.863

Aphelion (Q)

1.404

Eccentricity (e)

0.238

Inclination (i)

2.9

deg

Orbit period (P)

440.9

Earth MOID

0.00032

U parameter

0.0

Next Earth close approach

Date

2029-07-28

Nominal distance (from Earth center)

0.04955

7412651

Maximum Brightness

20.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.2

mag

Diameter

60 - 140*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-01-28

Observatory

Pan-STARRS 1, 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

1.133606

1-sigma variation

2.547E-9

Unit

Eccentricity (e)

Value

0.238374

1-sigma variation

2.701E-8

Unit

Inclination (i)

Value

2.8520

1-sigma variation

2.777E-6

Unit

Long. of Ascending Node (Ω)

Value

311.0494

1-sigma variation

1.890E-5

Unit

Arg. of Perihelion (ω)

Value

283.1640

1-sigma variation

2.110E-5

Unit

Mean Anomaly (M)

Value

30.29270

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.863384

1-sigma variation

Unit

Aphelion distance

Value

1.403827

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.001503

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.144609

1-sigma variation

Unit

MOID

Value

0.000320

1-sigma variation

Unit

Orbit Period

Value

440.8505

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.48540E-18	5.62854E-17	-3.30493E-17	-4.99294E-16	8.03903E-15	-2.42597E-14
e	5.62854E-17	7.29547E-16	-2.72020E-15	1.33261E-14	5.93582E-14	-1.86191E-13
i	-3.30493E-17	-2.72020E-15	7.70988E-12	3.26128E-11	-2.66954E-11	-6.95914E-12
Ω	-4.99294E-16	1.33261E-14	3.26128E-11	3.57204E-10	-3.78603E-10	2.88914E-11
ω	8.03903E-15	5.93582E-14	-2.66954E-11	-3.78603E-10	4.45291E-10	-9.63834E-11
M	-2.42597E-14	-1.86191E-13	-6.95914E-12	2.88914E-11	-9.63834E-11	1.37976E-10

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

23.198

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

60 - 140*

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

4364

Unit

Source

[1]

Unobserved

Value

718

Unit

Source

[1]

Normalized RMS of residuals

Value

0.43649

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2011-10-24.535428

Unit

Source

[2]

Last Observation

Value

2023-10-05.494074

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

355 (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 2017BL30 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	1960-05-10 14:08	2.0	0.1500742	0.1500737	0.0000002
EARTH	1971-03-03 12:34	2.9	0.0374421	0.0373805	0.0000206
EARTH	1977-07-19 07:11	14.2	0.0837525	0.0836723	0.0000267
EARTH	1988-03-08 14:28	2.4	0.0475117	0.0474765	0.0000117
EARTH	1994-08-02 21:36	< 1 min	0.0098963	0.0098949	0.0000005
EARTH	2000-08-14 22:20	< 1 min	0.1869650	0.1869638	0.0000004
EARTH	2011-02-23 10:22	< 1 s	0.1368172	0.1368168	0.0000001
EARTH	2017-03-09 13:50	< 1 s	0.0628413	0.0628411	0.0000000
EARTH	2023-05-22 02:04	< 1 min	0.1542092	0.1542091	0.0000000
EARTH	2029-07-28 11:27	< 1 min	0.0495505	0.0495500	0.0000002
EARTH	2035-08-12 01:57	< 1 min	0.1194232	0.1194228	0.0000001
EARTH	2052-02-29 10:20	< 1 min	0.0402874	0.0402867	0.0000002
EARTH	2058-03-18 06:16	< 1 min	0.0907772	0.0907768	0.0000001
EARTH	2064-05-06 12:46	< 1 min	0.1524022	0.1524021	0.0000000
EARTH	2070-06-16 18:21	< 1 min	0.1382101	0.1382096	0.0000002
EARTH	2076-07-29 13:38	< 1 min	0.0444626	0.0444610	0.0000005
EARTH	2082-08-07 07:46	< 1 min	0.0391877	0.0391874	0.0000001
EARTH	2099-02-21 19:10	< 1 min	0.1759488	0.1759450	0.0000013
EARTH	2105-03-03 10:36	< 1 min	0.0279136	0.0279121	0.0000005
EARTH	2111-03-23 23:19	3.1	0.0985974	0.0985844	0.0000043
EARTH	2117-05-05 06:46	7.1	0.1509362	0.1509323	0.0000013
EARTH	2123-06-10 01:26	8.7	0.1462335	0.1462260	0.0000025

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
63.77955630	209.27677438	0.00006636	MINIMUM
300.58990232	59.06283029	0.02589167	MINIMUM
2.20966219	134.01735105	0.15436795	SADDLE
181.60032995	313.71939274	0.41895869	SADDLE
3.00110183	315.05897351	1.85152344	SADDLE
182.03559735	134.06923943	2.41421814	MAXIMUM

Download:

MOID Plots

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