Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
1609 Brenda (1951 NL)
Classification: Main-belt Asteroid          SPK-ID: 2001609
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2489730243772391 1.6932e-08  
a 2.583397612011125 7.5025e-09 au
q 1.940201295379778 4.2614e-08 au
i 18.63095940013077 9.2925e-07 deg
node 105.2223352278214 2.595e-06 deg
peri 229.2365507141752 4.4534e-06 deg
M 280.1419934764688 7.834e-06 deg
tp 2459732.935078714396
(2022-Jun-02.43507871)
3.4061e-05 TDB
period 1516.649783907316
4.15
6.6068e-06
1.809e-08
d
yr
n .2373652795917979 1.034e-09 deg/d
Q 3.226593928642473 9.3705e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3487  
   data-arc span      31825 days (87.13 yr)  
   first obs. used      1934-05-11  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39681  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:34:14  

Additional Information
 Earth MOID = .97336 au 
 Jupiter MOID = 2.22794 au 
 T_jup = 3.307 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.61   n/a MPCxxxxx  
diameter diameter 29.64 km 1.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 19.776 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.J.; Pravec, P.; Koehn, B.W. (2019) Minor Plantet Bull. 46, 238-265.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.1147   0.014 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV 0.860   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.51 deg.
U-B UB 0.390   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.51 deg.

1609 Brenda (1951 NL)          Discovered 1951-Jul-10 by Johnson, E. L. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1951 NL = 1925 EA = 1934 JB = 1947 WB = 1950 HD = 1954 EP = 1954 HE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-29 20:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin