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1280 Baillauda (1933 QB)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001280
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04803197576920988 3.0534e-08  
a 3.423450115606415 1.4074e-08 au
q 3.259015042606509 1.0955e-07 au
i 6.453370477300563 3.6601e-06 deg
node 293.0579206024639 2.9174e-05 deg
peri 94.85709410085818 4.9112e-05 deg
M 283.9715753838793 4.0071e-05 deg
tp 2459885.116269523996
(2022-Nov-01.61626952)
0.00025847 TDB
period 2313.632801373886
6.33
1.4268e-05
3.906e-08
d
yr
n .1555994537189411 9.5955e-10 deg/d
Q 3.587885188606321 1.475e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3242  
   data-arc span      32133 days (87.98 yr)  
   first obs. used      1933-08-18  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41279  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:31:02  

Additional Information
 Earth MOID = 2.27159 au 
 Jupiter MOID = 1.7093 au 
 T_jup = 3.130 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456405.5 (2013-Apr-23.0) TDB
Reference: JPL 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05121156496261271 3.0081e-08  
q 3.2386775505952 1.0678e-07 au
tp 2455304.484867247836
(2010-Apr-17.98486725)
0.00023938 TDB
node 293.0992700607138 2.9175e-05 deg
peri 99.5705918181451 4.7557e-05 deg
i 6.459447171982003 3.6623e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3242  
   data-arc span      32133 days (87.98 yr)  
   first obs. used      1933-08-18  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41279  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:31:02  

Additional Information
 Jupiter MOID = 1.7093 au 
 T_jup = 3.130 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.048507335332731E-16 -3.186216443623342E-15 -4.003397136909366E-13 7.876755312734726E-16 -8.12322742007229E-14 4.383058445553535E-16
q -3.186216443623342E-15 1.14013889575408E-14 1.784275275595741E-12 -7.168790429193713E-15 3.599497417354902E-13 -1.262591298474422E-15
tp -4.003397136909366E-13 1.784275275595741E-12 5.730193457694246E-8 -3.296971576034021E-11 8.997927394780036E-9 -3.316536662038919E-12
node 7.876755312734726E-16 -7.168790429193713E-15 -3.296971576034021E-11 8.511849224192651E-10 -8.515953537994514E-10 1.008438140489156E-12
peri -8.12322742007229E-14 3.599497417354902E-13 8.997927394780036E-9 -8.515953537994514E-10 2.261713530401163E-9 -1.48535477582171E-12
i 4.383058445553535E-16 -1.262591298474422E-15 -3.316536662038919E-12 1.008438140489156E-12 -1.48535477582171E-12 1.34127984650635E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.19   n/a E2021B10 IRAS observations used: 18
diameter diameter 50.83 km 2.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18
rotation period rot_per 12.6 h n/a LCDB (Rev. 2020-October); 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:
[Lagerkvist, C.-I.; Erikson, A.; Debehogne, H.; Festin, L.; et al. (1995) Astron. Astrophys. Suppl. Ser. 113, 115-129.]
geometric albedo albedo 0.0505   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18
B-V BV 0.671   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.73 deg.
U-B UB 0.360   0.055 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.73 deg.
Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

1280 Baillauda (1933 QB)          Discovered 1933-Aug-18 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1933 QB = 1931 HE = 1946 SF = 1959 UK = 1961 AN = A912 GB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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