Asteroids

2023RO49 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.968

Aphelion (Q)

1.149

Eccentricity (e)

0.085

Inclination (i)

7.9

deg

Orbit period (P)

397.7

Earth MOID

0.02983

U parameter

3.1

Next Earth close approach

Date

2035-10-28

Nominal distance (from Earth center)

0.12997

19442792

Maximum Brightness

22.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.4

mag

Diameter

40 - 80*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-09-14

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

1.058337

1-sigma variation

4.237E-7

Unit

Eccentricity (e)

Value

0.085263

1-sigma variation

4.744E-7

Unit

Inclination (i)

Value

7.8558

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

193.8952

1-sigma variation

6.198E-6

Unit

Arg. of Perihelion (ω)

Value

280.5770

1-sigma variation

2.038E-5

Unit

Mean Anomaly (M)

Value

250.71828

1-sigma variation

0.00039

Unit

Perihelion distance

Value

0.968100

1-sigma variation

Unit

Aphelion distance

Value

1.148575

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.033130

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.067562

1-sigma variation

Unit

MOID

Value

0.029827

1-sigma variation

Unit

Orbit Period

Value

397.6807

1-sigma variation

Unit

U parameter

Value

3.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.79557E-13	2.00998E-13	2.18023E-11	1.89625E-12	5.39882E-12	-1.64638E-10
e	2.00998E-13	2.25033E-13	2.44049E-11	2.12465E-12	6.07698E-12	-1.84334E-10
i	2.18023E-11	2.44049E-11	2.65985E-9	2.32156E-10	6.42821E-10	-1.99798E-8
Ω	1.89625E-12	2.12465E-12	2.32156E-10	3.84161E-11	5.98111E-11	-1.75983E-9
ω	5.39882E-12	6.07698E-12	6.42821E-10	5.98111E-11	4.15524E-10	-5.20935E-9
M	-1.64638E-10	-1.84334E-10	-1.99798E-8	-1.75983E-9	-5.20935E-9	1.51242E-7

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

24.38

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

40 - 80*

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

229

Unit

Source

[1]

Unobserved

Value

508

Unit

Source

[1]

Normalized RMS of residuals

Value

0.487271

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-09-14.391111

Unit

Source

[2]

Last Observation

Value

2024-04-30.349189

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

207 (2)

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 2023RO49 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	1950-03-30 14:36	9.5	0.0316179	0.0314890	0.0000440
EARTH	1961-10-29 18:02	< 1 min	0.1726491	0.1725690	0.0000267
EARTH	1962-06-09 09:44	40.0	0.1885727	0.1885375	0.0000118
EARTH	1974-09-28 17:11	58.1	0.1113206	0.1110906	0.0000768
EARTH	1975-03-29 11:46	< 1 min	0.0705775	0.0702445	0.0001110
EARTH	1986-10-18 01:27	9.1	0.0621124	0.0620953	0.0000057
EARTH	1987-03-31 21:45	3.1	0.0452785	0.0452134	0.0000217
EARTH	1998-10-29 19:18	< 1 min	0.1874695	0.1874540	0.0000052
EARTH	1999-06-20 08:28	12.6	0.1930108	0.1930036	0.0000024
EARTH	2011-09-27 10:41	20.7	0.1141451	0.1140681	0.0000257
EARTH	2012-03-28 06:24	< 1 min	0.0757980	0.0756767	0.0000404
EARTH	2023-10-15 20:08	< 1 s	0.0657105	0.0657092	0.0000004
EARTH	2024-03-29 21:04	< 1 s	0.0362217	0.0362209	0.0000002
EARTH	2035-10-28 23:19	1.6	0.1299670	0.1298516	0.0000385
EARTH	2036-05-03 12:47	24.8	0.1603486	0.1602547	0.0000313
EARTH	2048-09-06 19:02	35.0	0.1548922	0.1548090	0.0000278
EARTH	2049-03-29 04:47	1.3	0.1450664	0.1449153	0.0000504
EARTH	2060-10-16 00:36	5.0	0.0623197	0.0623071	0.0000042
EARTH	2061-03-30 09:38	1.6	0.0416972	0.0416633	0.0000113
EARTH	2073-07-26 21:21	34.0	0.1933969	0.1933826	0.0000047
EARTH	2085-10-14 20:08	5.2	0.0626158	0.0625991	0.0000056
EARTH	2086-03-30 04:03	1.7	0.0388758	0.0388422	0.0000112
EARTH	2098-08-30 01:28	56.3	0.1653364	0.1652271	0.0000364
EARTH	2099-03-29 07:07	1.7	0.1639516	0.1637173	0.0000781
EARTH	2110-10-26 20:12	4.5	0.1042031	0.1040182	0.0000617
EARTH	2111-04-21 11:05	29.7	0.1381244	0.1379306	0.0000646
EARTH	2123-10-15 11:27	< 1 min	0.0617247	0.0617194	0.0000018
EARTH	2124-03-30 11:05	< 1 min	0.0387516	0.0387447	0.0000023

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
69.26363060	85.25762907	0.03081622	MINIMUM
276.18566463	284.26245836	0.05995185	MINIMUM
350.55874561	1.89709654	0.13446362	SADDLE
173.58975227	186.45684840	0.19772659	SADDLE
1.39825847	193.60484332	1.97951376	SADDLE
184.04468317	16.27359168	2.12794409	MAXIMUM

Download:

MOID Plots

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