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
JPL Small-Body Database Browser
Search: [ help ]  
11727 Sweet (1998 JM1)
Classification: Main-belt Asteroid          SPK-ID: 2011727
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.

[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04936930169901846 3.2654e-08  
a 2.381714133334903 7.7443e-09 au
q 2.264130569725476 7.9944e-08 au
i 1.818412944331506 3.1424e-06 deg
node 319.2744751292527 0.00010141 deg
peri 56.5653323236029 0.00010619 deg
M 212.6607034992465 3.3288e-05 deg
tp 2459549.976304493578
0.00012541 TDB
period 1342.5574460828
n .2681449505571456 1.3078e-09 deg/d
Q 2.49929769694433 8.1266e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2318  
   data-arc span      11580 days (31.70 yr)  
   first obs. used      1988-10-03  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46232  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:18:50  

Additional Information
 Earth MOID = 1.265 au 
 Jupiter MOID = 2.69488 au 
 T_jup = 3.535 
[ 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 14.1   n/a MPO365391  
diameter diameter 4.345 km 0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 3.761 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.283   0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

11727 Sweet           Discovered 1998 May 1 by the Near-Earth Asteroid Tracking Team (NEAT) at Haleakala.
During the 1.2-m Schmidt conversion Merle Sweet (b. 1942), assistant superintendent at the Palomar Observatory, assisted in overseeing the details in the layout and construction of the slip-ring trolleys. He also worked in the rewiring of the dome. The name was suggested by R. Thicksten.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020328/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1998 JM1 = 1988 TT3 = 1990 DL4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Aug-08 09:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin